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3.18x+2.6+0.9x=28
We move all terms to the left:
3.18x+2.6+0.9x-(28)=0
We add all the numbers together, and all the variables
4.08x-25.4=0
We move all terms containing x to the left, all other terms to the right
4.08x=25.4
x=25.4/4.08
x=6+0.92/4.08
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