12x+3-8=7x+40

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Solution for 12x+3-8=7x+40 equation: 



12x+3-8=7x+40

We move all terms to the left:

12x+3-8-(7x+40)=0

We add all the numbers together, and all the variables

12x-(7x+40)-5=0

We get rid of parentheses

12x-7x-40-5=0

We add all the numbers together, and all the variables

5x-45=0

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

5x=45

x=45/5

x=9

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