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4.6+(-1.3)x=2.8
We move all terms to the left:
4.6+(-1.3)x-(2.8)=0
We add all the numbers together, and all the variables
(-1.3)x+1.8=0
We multiply parentheses
-1.3x+1.8=0
We move all terms containing x to the left, all other terms to the right
-1.3x=-1.8
x=-1.8/-1.3
x=1+0.5/1.3
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