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(67.74+3x)/2=80
We move all terms to the left:
(67.74+3x)/2-(80)=0
We add all the numbers together, and all the variables
(3x+67.74)/2-80=0
We multiply all the terms by the denominator
(3x+67.74)-80*2=0
We add all the numbers together, and all the variables
(3x+67.74)-160=0
We get rid of parentheses
3x+67.74-160=0
We add all the numbers together, and all the variables
3x-92.26=0
We move all terms containing x to the left, all other terms to the right
3x=92.26
x=92.26/3
x=30+2.26/3
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