3x=2(90-x)

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Solution for 3x=2(90-x) equation: 



3x=2(90-x)

We move all terms to the left:

3x-(2(90-x))=0

We add all the numbers together, and all the variables

3x-(2(-1x+90))=0



We calculate terms in parentheses: -(2(-1x+90)), so:

2(-1x+90)

We multiply parentheses

-2x+180

Back to the equation:

-(-2x+180)



We get rid of parentheses

3x+2x-180=0

We add all the numbers together, and all the variables

5x-180=0

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

5x=180

x=180/5

x=36

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