7x+7(2x-18)=-21

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Solution for 7x+7(2x-18)=-21 equation: 



7x+7(2x-18)=-21

We move all terms to the left:

7x+7(2x-18)-(-21)=0

We add all the numbers together, and all the variables

7x+7(2x-18)+21=0

We multiply parentheses

7x+14x-126+21=0

We add all the numbers together, and all the variables

21x-105=0

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

21x=105

x=105/21

x=5

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