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15+0.75x=12+0.50
We move all terms to the left:
15+0.75x-(12+0.50)=0
We add all the numbers together, and all the variables
0.75x+15-(12.5)=0
We add all the numbers together, and all the variables
0.75x+2.5=0
We move all terms containing x to the left, all other terms to the right
0.75x=-2.5
x=-2.5/0.75
x=-3+0.25/0.75
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