3x-20+x+40=18

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Solution for 3x-20+x+40=18 equation: 



3x-20+x+40=18

We move all terms to the left:

3x-20+x+40-(18)=0

We add all the numbers together, and all the variables

4x+2=0

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

4x=-2

x=-2/4

x=-1/2

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