40x=45(4-x)

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Solution for 40x=45(4-x) equation: 



40x=45(4-x)

We move all terms to the left:

40x-(45(4-x))=0

We add all the numbers together, and all the variables

40x-(45(-1x+4))=0



We calculate terms in parentheses: -(45(-1x+4)), so:

45(-1x+4)

We multiply parentheses

-45x+180

Back to the equation:

-(-45x+180)



We get rid of parentheses

40x+45x-180=0

We add all the numbers together, and all the variables

85x-180=0

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

85x=180

x=180/85

x=2+2/17

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