180-x=10(90-x)

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Solution for 180-x=10(90-x) equation:



180-x=10(90-x)
We move all terms to the left:
180-x-(10(90-x))=0
We add all the numbers together, and all the variables
-x-(10(-1x+90))+180=0
We add all the numbers together, and all the variables
-1x-(10(-1x+90))+180=0
We calculate terms in parentheses: -(10(-1x+90)), so:
10(-1x+90)
We multiply parentheses
-10x+900
Back to the equation:
-(-10x+900)
We get rid of parentheses
-1x+10x-900+180=0
We add all the numbers together, and all the variables
9x-720=0
We move all terms containing x to the left, all other terms to the right
9x=720
x=720/9
x=80

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