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3.7+2.5x=4.5-12.3
We move all terms to the left:
3.7+2.5x-(4.5-12.3)=0
We add all the numbers together, and all the variables
2.5x+3.7-(-7.8)=0
We add all the numbers together, and all the variables
2.5x+11.5=0
We move all terms containing x to the left, all other terms to the right
2.5x=-11.5
x=-11.5/2.5
x=-4+1/1.6666666666667
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