2x-100=40

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Solution for 2x-100=40 equation: 



2x-100=40

We move all terms to the left:

2x-100-(40)=0

We add all the numbers together, and all the variables

2x-140=0

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

2x=140

x=140/2

x=70

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