20-5x=3(4-x)

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Solution for 20-5x=3(4-x) equation: 



20-5x=3(4-x)

We move all terms to the left:

20-5x-(3(4-x))=0

We add all the numbers together, and all the variables

-5x-(3(-1x+4))+20=0



We calculate terms in parentheses: -(3(-1x+4)), so:

3(-1x+4)

We multiply parentheses

-3x+12

Back to the equation:

-(-3x+12)



We get rid of parentheses

-5x+3x-12+20=0

We add all the numbers together, and all the variables

-2x+8=0

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

-2x=-8

x=-8/-2

x=+4

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