3(4-2x)+7=x-21

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Solution for 3(4-2x)+7=x-21 equation: 



3(4-2x)+7=x-21

We move all terms to the left:

3(4-2x)+7-(x-21)=0

We add all the numbers together, and all the variables

3(-2x+4)-(x-21)+7=0

We multiply parentheses

-6x-(x-21)+12+7=0

We get rid of parentheses

-6x-x+21+12+7=0

We add all the numbers together, and all the variables

-7x+40=0

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

-7x=-40

x=-40/-7

x=5+5/7

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