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0.5(x+30)+0.5x=48
We move all terms to the left:
0.5(x+30)+0.5x-(48)=0
We add all the numbers together, and all the variables
0.5x+0.5(x+30)-48=0
We multiply parentheses
0.5x+0.5x+15-48=0
We add all the numbers together, and all the variables
x-33=0
We move all terms containing x to the left, all other terms to the right
x=33
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