-21=-15x-6

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Solution for -21=-15x-6 equation: 



-21=-15x-6

We move all terms to the left:

-21-(-15x-6)=0

We get rid of parentheses

15x+6-21=0

We add all the numbers together, and all the variables

15x-15=0

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

15x=15

x=15/15

x=1

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