(90-x)+(180-x)=120

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Solution for (90-x)+(180-x)=120 equation:



(90-x)+(180-x)=120
We move all terms to the left:
(90-x)+(180-x)-(120)=0
We add all the numbers together, and all the variables
(-1x+90)+(-1x+180)-120=0
We get rid of parentheses
-1x-1x+90+180-120=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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