40+x=3(15+x)

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Solution for 40+x=3(15+x) equation: 



40+x=3(15+x)

We move all terms to the left:

40+x-(3(15+x))=0

We add all the numbers together, and all the variables

x-(3(x+15))+40=0



We calculate terms in parentheses: -(3(x+15)), so:

3(x+15)

We multiply parentheses

3x+45

Back to the equation:

-(3x+45)



We get rid of parentheses

x-3x-45+40=0

We add all the numbers together, and all the variables

-2x-5=0

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

-2x=5

x=5/-2

x=-2+1/2

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