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anonymous

  • one year ago

2=10+z/-3

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  1. anonymous
    • one year ago
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    Assuming the problem is asking you to solve for z, follow the rules of solving for a variable. You need to isolate z. So, start by getting rid of the 10 that is on the same side as the z. How can you get rid of that?

  2. anonymous
    • one year ago
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    Subtract?

  3. anonymous
    • one year ago
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    Yep, exactly. Subtract 10 from both sides of the equation. Your equation should now look like this: \[-8= \frac{ z }{ -3 }\]

  4. anonymous
    • one year ago
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    Let me know if you didn't get this.

  5. anonymous
    • one year ago
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    If I ever have a problem like this will I always have to subtract a number in place of the 2 and 10?

  6. anonymous
    • one year ago
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    Well, generally speaking, the first step in most problems like this is to subtract (or add) a number to both sides. If your problem was \[12x-7=14\] you would first add 7 to both sides.

  7. anonymous
    • one year ago
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    How do you know which one to add to both sides?

  8. anonymous
    • one year ago
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    We have to find z now right?

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  9. anonymous
    • one year ago
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    Correct. So, to get the -3 out of the denominator, what do you need to do?

  10. anonymous
    • one year ago
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    Multiply and thanks I got it now I kinda lost memory of how to do the problems thanks I finished the problem I'll show it to you so you can correct me if I made any mistakes

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  11. anonymous
    • one year ago
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    Oh wait a second! The way you typed your question is a little different from the way that you wrote it! So subtracting ten is not the first step! You'll get used to typing equations correctly eventually, but in this case your problem would look like THIS: (10+z)/-3

  12. anonymous
    • one year ago
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    So, instead of subtracting 10 as your first step, you need to get rid of that -3 first.

  13. anonymous
    • one year ago
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    Oh ok I'll do that

  14. anonymous
    • one year ago
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    I subtract to do that right?

  15. anonymous
    • one year ago
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    Nope, in this case because -3 is in the denominator, you need to multiply by -3.

  16. anonymous
    • one year ago
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    So you should get \[-6=10+z\]

  17. anonymous
    • one year ago
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    Is that right?

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  18. anonymous
    • one year ago
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    Do you have any tips for negative and positive signs cause I'm not good with those

  19. anonymous
    • one year ago
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    You got negative 6 and I got positive and I forgot the rules for negative and positive signs

  20. anonymous
    • one year ago
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    Okay negative an positive: If the two numbers you are multiplying have the SAME sign, it is always a positive answer. If the two numbers you are multiplying have DIFFERENT signs, it is always a negative answer.

  21. anonymous
    • one year ago
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    Ok thank you now that I have multiplied 3 on both sides what do I do with the rest of the problem

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  22. anonymous
    • one year ago
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    Now it's time to subtract that 10 from both sides.

  23. anonymous
    • one year ago
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    Like that?

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  24. anonymous
    • one year ago
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    Yep, exactly. So you now have \[-16=z\]

  25. anonymous
    • one year ago
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    Thank you sooooo much for helping me I thought no one was THANK YOOUU and if you passed freshman year can you tell me some math subjects I should be ready for?

  26. anonymous
    • one year ago
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    Oh wow um well get ready to do a lot of factoring. There is a ton of factoring stuff in Algebra.

  27. anonymous
    • one year ago
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    Ok thanks

  28. anonymous
    • one year ago
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    How can I become a fan of you

  29. anonymous
    • one year ago
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    If you roll your mouse over my profile, a box will pop up and there will be a button on the bottom that says become fan.

  30. anonymous
    • one year ago
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    I'm on my phone when I get on my laptop till do it that's for the help :)

  31. anonymous
    • one year ago
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    I appreciate it! Good luck with the rest of your math!

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