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zordoloom

How would I solve this equation: 10(2x + 7) = 90

  • one year ago
  • one year ago

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  1. winterfez
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    |dw:1355034090176:dw|

    • one year ago
  2. calculusfunctions
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    If you have an equation of the form a(bx + c) = d Then i). divide both sides by a ii). add the opposite of c to both sides iii). divide both sides by b OR i). multiply a by (bx + c) by the distributive property to obtain (ab)x + ac = d ii). add the opposite of ac to both sides iii). divide both sides by ab Note: @izziewoods and @winterfez we don't give out answers or do an entire solution except for the final step, because that does not help the person wanting help to learn. So either teach, otherwise you may be reported. I suggest you erase your answers.

    • one year ago
  3. yummydum
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    \[10(2x+7)=90\]divide both sides by 10:\[2x+7=9\]subtract 7:\[2x=2\]divide both sides by 2 to isolate x:\[x-~...?\]

    • one year ago
  4. calculusfunctions
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    @yummydum please read the warning above, about giving out answers!

    • one year ago
  5. zordoloom
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    Thanks.

    • one year ago
  6. yummydum
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    the main goal is to get x alone, of course, so when you see parenthesis, automatically look at if you can get rid of the stuff outside the parenthesis first. once you done that get the term containing x isolated at one side of the equal sign. if then the x is still not alone, divide to isolate.

    • one year ago
  7. calculusfunctions
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    Welcome @ zordoloom I assume you understand?

    • one year ago
  8. zordoloom
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    Yep

    • one year ago
  9. calculusfunctions
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    Great!

    • one year ago
  10. izziewoods
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    @calculusfunctions woops I'm sorry I just signed up and I didn't know the rules

    • one year ago
  11. calculusfunctions
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    No worries @izziewoods as long as it doesn't happen again.

    • one year ago
  12. izziewoods
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    @calculusfunctions it won't happen again! thank you!=)

    • one year ago
  13. Katieann16
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    x=1

    • one year ago
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