anonymous
  • anonymous
I need help, I'll fan and medal
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
mathwizzard3
  • mathwizzard3
what is it on?
anonymous
  • anonymous
anonymous
  • anonymous
How do you get 1 7/8

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More answers

mathwizzard3
  • mathwizzard3
Do you mean how did 1 7/8 come out of no where?
anonymous
  • anonymous
yes
mathwizzard3
  • mathwizzard3
So you can add, multiply, divide, subtract any number on an equation as long as it is is on both sides.
mathwizzard3
  • mathwizzard3
So technically you could just multiply both sides by 5 if you wanted.
anonymous
  • anonymous
so that's how they got 1 7/8???
mathwizzard3
  • mathwizzard3
never mind I think we are thinking about different parts
mathwizzard3
  • mathwizzard3
so they just combined the positive 4 and the negative 5 7/8
mathwizzard3
  • mathwizzard3
to get -1 7/8
anonymous
  • anonymous
it's not negative sign tho
mathwizzard3
  • mathwizzard3
the 5 7/8 was negative
anonymous
  • anonymous
isn't it just subtraction?
mathwizzard3
  • mathwizzard3
yeah, pretty much, but since the negative is bigger the answer is negative
FortyTheRapper
  • FortyTheRapper
So, you have 8 = d - 1 7/8 You want to get d by itself, right? So how would you get the 1 7/8 to the other side of the equal sign?
anonymous
  • anonymous
um inverse property of multiplication??
anonymous
  • anonymous
idk
FortyTheRapper
  • FortyTheRapper
Basically you do opposites You see it's - 1 7/8 The opposite of multiplication is division, for example So what's the opposite of subtraction (Since you're subtracting in the problem d - 1 7/8)
anonymous
  • anonymous
addition
FortyTheRapper
  • FortyTheRapper
Right, so you would add 1 7/8 to both sides
anonymous
  • anonymous
wait how did you get 1 7/8?
FortyTheRapper
  • FortyTheRapper
Because the original was 8 = d - 1 7/8 When you try to get the d by itself, you add 1 7/8, because that's the number on the same side of the variable d
FortyTheRapper
  • FortyTheRapper
If that made any sense
anonymous
  • anonymous
But isn't the original equation: 8= 4 + d - 5 7/8?
FortyTheRapper
  • FortyTheRapper
Omg, I didn't see that part! Yes it is. What the author did was a conversion. Would you know how to convert 4 into a fraction over 8?
FortyTheRapper
  • FortyTheRapper
Basically 4 = ? --- 8
anonymous
  • anonymous
ok
FortyTheRapper
  • FortyTheRapper
Hint: Cross multiply those two numbers to get the answer
anonymous
  • anonymous
ok I got 47/2 that's probably way off...
FortyTheRapper
  • FortyTheRapper
Remember 4 also equals 4/1, so basically its 4/1 = ?/8. So lets figure out the denominator. 1 times what number equals 8?

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