15x-(8x-7)=21

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Solution for 15x-(8x-7)=21 equation: 



15x-(8x-7)=21

We move all terms to the left:

15x-(8x-7)-(21)=0

We get rid of parentheses

15x-8x+7-21=0

We add all the numbers together, and all the variables

7x-14=0

We move all terms containing x to the left, all other terms to the right

7x=14

x=14/7

x=2

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