80=9+x

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Solution for 80=9+x equation:



80=9+x
We move all terms to the left:
80-(9+x)=0
We add all the numbers together, and all the variables
-(x+9)+80=0
We get rid of parentheses
-x-9+80=0
We add all the numbers together, and all the variables
-1x+71=0
We move all terms containing x to the left, all other terms to the right
-x=-71
x=-71/-1
x=+71

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