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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

3(2x-4)+28=0

We multiply parentheses

6x-12+28=0

We add all the numbers together, and all the variables

6x+16=0

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

6x=-16

x=-16/6

x=-2+2/3

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