3x-+8=40-x

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



3x-+8=40-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

3x-(-1x+40)+8-=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

3x+1x-40=0

We add all the numbers together, and all the variables

4x-40=0

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

4x=40

x=40/4

x=10

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