15x-21+3x=15x+4-1

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Solution for 15x-21+3x=15x+4-1 equation: 



15x-21+3x=15x+4-1

We move all terms to the left:

15x-21+3x-(15x+4-1)=0

We add all the numbers together, and all the variables

15x+3x-(15x+3)-21=0

We add all the numbers together, and all the variables

18x-(15x+3)-21=0

We get rid of parentheses

18x-15x-3-21=0

We add all the numbers together, and all the variables

3x-24=0

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

3x=24

x=24/3

x=8

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