-3(2-5x)=-21

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Solution for -3(2-5x)=-21 equation: 



-3(2-5x)=-21

We move all terms to the left:

-3(2-5x)-(-21)=0

We add all the numbers together, and all the variables

-3(-5x+2)-(-21)=0

We add all the numbers together, and all the variables

-3(-5x+2)+21=0

We multiply 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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