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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

2(-1x)+4x-(2(-1x)+-20)=0

We add all the numbers together, and all the variables

4x+2(-1x)-(2(-1x)+-20)=0

We use the square of the difference formula

4x+2(-1x)-(2(-1x)-20)=0

We multiply parentheses

4x-2x-(2(-1x)-20)=0



We calculate terms in parentheses: -(2(-1x)-20), so:

2(-1x)-20

We multiply parentheses

-2x-20

Back to the equation:

-(-2x-20)



We add all the numbers together, and all the variables

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

We get rid of parentheses

2x+2x+20=0

We add all the numbers together, and all the variables

4x+20=0

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

4x=-20

x=-20/4

x=-5

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