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3+0.75x=4.5+0.5x
We move all terms to the left:
3+0.75x-(4.5+0.5x)=0
We add all the numbers together, and all the variables
0.75x-(0.5x+4.5)+3=0
We get rid of parentheses
0.75x-0.5x-4.5+3=0
We add all the numbers together, and all the variables
0.25x-1.5=0
We move all terms containing x to the left, all other terms to the right
0.25x=1.5
x=1.5/0.25
x=6
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