7x+21=-12

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Solution for 7x+21=-12 equation: 



7x+21=-12

We move all terms to the left:

7x+21-(-12)=0

We add all the numbers together, and all the variables

7x+33=0

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

7x=-33

x=-33/7

x=-4+5/7

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