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80=200-x*25
We move all terms to the left:
80-(200-x*25)=0
We add all the numbers together, and all the variables
-(-x*25+200)+80=0
We get rid of parentheses
x*25-200+80=0
We add all the numbers together, and all the variables
x*25-120=0
Wy multiply elements
25x-120=0
We move all terms containing x to the left, all other terms to the right
25x=120
x=120/25
x=4+4/5
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