15x+20-10x-9=25+8-21x-7

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Solution for 15x+20-10x-9=25+8-21x-7 equation: 



15x+20-10x-9=25+8-21x-7

We move all terms to the left:

15x+20-10x-9-(25+8-21x-7)=0

We add all the numbers together, and all the variables

15x-10x-(-21x+26)+20-9=0

We add all the numbers together, and all the variables

5x-(-21x+26)+11=0

We get rid of parentheses

5x+21x-26+11=0

We add all the numbers together, and all the variables

26x-15=0

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

26x=15

x=15/26

x=15/26

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