16=(7-x)+4x=20

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Solution for 16=(7-x)+4x=20 equation: 



16=(7-x)+4x=20

We move all terms to the left:

16-((7-x)+4x)=0

We add all the numbers together, and all the variables

-((-1x+7)+4x)+16=0



We calculate terms in parentheses: -((-1x+7)+4x), so:

(-1x+7)+4x

We add all the numbers together, and all the variables

4x+(-1x+7)

We get rid of parentheses

4x-1x+7

We add all the numbers together, and all the variables

3x+7

Back to the equation:

-(3x+7)



We get rid of parentheses

-3x-7+16=0

We add all the numbers together, and all the variables

-3x+9=0

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

-3x=-9

x=-9/-3

x=+3

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