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650+13x=20+77x
We move all terms to the left:
650+13x-(20+77x)=0
We add all the numbers together, and all the variables
13x-(77x+20)+650=0
We get rid of parentheses
13x-77x-20+650=0
We add all the numbers together, and all the variables
-64x+630=0
We move all terms containing x to the left, all other terms to the right
-64x=-630
x=-630/-64
x=9+27/32
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