3x+2x+12=1x+40

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Solution for 3x+2x+12=1x+40 equation: 



3x+2x+12=1x+40

We move all terms to the left:

3x+2x+12-(1x+40)=0

We add all the numbers together, and all the variables

3x+2x-(x+40)+12=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

5x-x-40+12=0

We add all the numbers together, and all the variables

4x-28=0

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

4x=28

x=28/4

x=7

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