12+x=-4+9

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Solution for 12+x=-4+9 equation: 



12+x=-4+9

We move all terms to the left:

12+x-(-4+9)=0

We add all the numbers together, and all the variables

x+12-5=0

We add all the numbers together, and all the variables

x+7=0

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

x=-7

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