45x=30(40-x)

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Solution for 45x=30(40-x) equation: 



45x=30(40-x)

We move all terms to the left:

45x-(30(40-x))=0

We add all the numbers together, and all the variables

45x-(30(-1x+40))=0



We calculate terms in parentheses: -(30(-1x+40)), so:

30(-1x+40)

We multiply parentheses

-30x+1200

Back to the equation:

-(-30x+1200)



We get rid of parentheses

45x+30x-1200=0

We add all the numbers together, and all the variables

75x-1200=0

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

75x=1200

x=1200/75

x=16

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