7x+7=-14x-7

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Solution for 7x+7=-14x-7 equation: 



7x+7=-14x-7

We move all terms to the left:

7x+7-(-14x-7)=0

We get rid of parentheses

7x+14x+7+7=0

We add all the numbers together, and all the variables

21x+14=0

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

21x=-14

x=-14/21

x=-2/3

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