3-(5x+2)=21

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



3-(5x+2)=21

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(5x+2)-18=0

We get rid of parentheses

-5x-2-18=0

We add all the numbers together, and all the variables

-5x-20=0

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

-5x=20

x=20/-5

x=-4

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