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0.7x+0.5x=3.3
We move all terms to the left:
0.7x+0.5x-(3.3)=0
We add all the numbers together, and all the variables
1.2x-3.3=0
We move all terms containing x to the left, all other terms to the right
1.2x=3.3
x=3.3/1.2
x=2+0.9/1.2
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