12+x*8=84

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Solution for 12+x*8=84 equation: 



12+x*8=84

We move all terms to the left:

12+x*8-(84)=0

We add all the numbers together, and all the variables

x*8-72=0

Wy multiply elements

8x-72=0

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

8x=72

x=72/8

x=9

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