48=2x+4(20-x)

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Solution for 48=2x+4(20-x) equation: 



48=2x+4(20-x)

We move all terms to the left:

48-(2x+4(20-x))=0

We add all the numbers together, and all the variables

-(2x+4(-1x+20))+48=0



We calculate terms in parentheses: -(2x+4(-1x+20)), so:

2x+4(-1x+20)

We multiply parentheses

2x-4x+80

We add all the numbers together, and all the variables

-2x+80

Back to the equation:

-(-2x+80)



We get rid of parentheses

2x-80+48=0

We add all the numbers together, and all the variables

2x-32=0

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

2x=32

x=32/2

x=16

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