7(8+x)=-21

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Solution for 7(8+x)=-21 equation:



7(8+x)=-21
We move all terms to the left:
7(8+x)-(-21)=0
We add all the numbers together, and all the variables
7(x+8)-(-21)=0
We add all the numbers together, and all the variables
7(x+8)+21=0
We multiply parentheses
7x+56+21=0
We add all the numbers together, and all the variables
7x+77=0
We move all terms containing x to the left, all other terms to the right
7x=-77
x=-77/7
x=-11

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