2x-40=128

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Solution for 2x-40=128 equation: 



2x-40=128

We move all terms to the left:

2x-40-(128)=0

We add all the numbers together, and all the variables

2x-168=0

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

2x=168

x=168/2

x=84

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