3(-4x+5)=-21

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Solution for 3(-4x+5)=-21 equation: 



3(-4x+5)=-21

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-12x+15+21=0

We add all the numbers together, and all the variables

-12x+36=0

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

-12x=-36

x=-36/-12

x=+3

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