X=(180-x)-30

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Solution for X=(180-x)-30 equation: 



X=(180-X)-30

We move all terms to the left:

X-((180-X)-30)=0

We add all the numbers together, and all the variables

X-((-1X+180)-30)=0



We calculate terms in parentheses: -((-1X+180)-30), so:

(-1X+180)-30

We get rid of parentheses

-1X+180-30

We add all the numbers together, and all the variables

-1X+150

Back to the equation:

-(-1X+150)



We get rid of parentheses

X+1X-150=0

We add all the numbers together, and all the variables

2X-150=0

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

2X=150

X=150/2

X=75

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