2x-4x=(-20)

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Solution for 2x-4x=(-20) equation: 



2x-4x=(-20)

We move all terms to the left:

2x-4x-((-20))=0

We add all the numbers together, and all the variables

-2x+20=0

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

-2x=-20

x=-20/-2

x=+10

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