(180-x)=5(90-x)+30

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Solution for (180-x)=5(90-x)+30 equation: 



(180-x)=5(90-x)+30

We move all terms to the left:

(180-x)-(5(90-x)+30)=0

We add all the numbers together, and all the variables

(-1x+180)-(5(-1x+90)+30)=0

We get rid of parentheses

-1x-(5(-1x+90)+30)+180=0



We calculate terms in parentheses: -(5(-1x+90)+30), so:

5(-1x+90)+30

We multiply parentheses

-5x+450+30

We add all the numbers together, and all the variables

-5x+480

Back to the equation:

-(-5x+480)



We get rid of parentheses

-1x+5x-480+180=0

We add all the numbers together, and all the variables

4x-300=0

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

4x=300

x=300/4

x=75

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