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4.x=3-12.9-12.9
We move all terms to the left:
4.x-(3-12.9-12.9)=0
We add all the numbers together, and all the variables
4.x-(-22.8)=0
We add all the numbers together, and all the variables
4.x+22.8=0
We move all terms containing x to the left, all other terms to the right
4.x=-22.8
x=-22.8/4.
x=-5+1/1.4285714285714
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