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2.15x-3.12=11.72
We move all terms to the left:
2.15x-3.12-(11.72)=0
We add all the numbers together, and all the variables
2.15x-14.84=0
We move all terms containing x to the left, all other terms to the right
2.15x=14.84
x=14.84/2.15
x=6+1/1.1082474226804
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