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153=2.18x+.82x
We move all terms to the left:
153-(2.18x+.82x)=0
We add all the numbers together, and all the variables
-(+3x)+153=0
We get rid of parentheses
-3x+153=0
We move all terms containing x to the left, all other terms to the right
-3x=-153
x=-153/-3
x=+51
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