40=4x+4(4x-15)

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Solution for 40=4x+4(4x-15) equation: 



40=4x+4(4x-15)

We move all terms to the left:

40-(4x+4(4x-15))=0



We calculate terms in parentheses: -(4x+4(4x-15)), so:

4x+4(4x-15)

We multiply parentheses

4x+16x-60

We add all the numbers together, and all the variables

20x-60

Back to the equation:

-(20x-60)



We get rid of parentheses

-20x+60+40=0

We add all the numbers together, and all the variables

-20x+100=0

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

-20x=-100

x=-100/-20

x=+5

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