-2x-(-4x)=30

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Solution for -2x-(-4x)=30 equation: 



-2x-(-4x)=30

We move all terms to the left:

-2x-(-4x)-(30)=0

We get rid of parentheses

-2x+4x-30=0

We add all the numbers together, and all the variables

2x-30=0

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

2x=30

x=30/2

x=15

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