21-9+4x-5x=8x-7x+4+2x-7

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Solution for 21-9+4x-5x=8x-7x+4+2x-7 equation: 



21-9+4x-5x=8x-7x+4+2x-7

We move all terms to the left:

21-9+4x-5x-(8x-7x+4+2x-7)=0

We add all the numbers together, and all the variables

4x-5x-(3x-3)+21-9=0

We add all the numbers together, and all the variables

-1x-(3x-3)+12=0

We get rid of parentheses

-1x-3x+3+12=0

We add all the numbers together, and all the variables

-4x+15=0

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

-4x=-15

x=-15/-4

x=3+3/4

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