15x-7=128-3x

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Solution for 15x-7=128-3x equation: 



15x-7=128-3x

We move all terms to the left:

15x-7-(128-3x)=0

We add all the numbers together, and all the variables

15x-(-3x+128)-7=0

We get rid of parentheses

15x+3x-128-7=0

We add all the numbers together, and all the variables

18x-135=0

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

18x=135

x=135/18

x=7+1/2

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