7(x+9)=-21

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Solution for 7(x+9)=-21 equation: 



7(x+9)=-21

We move all terms to the left:

7(x+9)-(-21)=0

We add all the numbers together, and all the variables

7(x+9)+21=0

We multiply parentheses

7x+63+21=0

We add all the numbers together, and all the variables

7x+84=0

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

7x=-84

x=-84/7

x=-12

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