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3.9+.79x=1.90x
We move all terms to the left:
3.9+.79x-(1.90x)=0
We add all the numbers together, and all the variables
.79x-(+1.90x)+3.9=0
We get rid of parentheses
.79x-1.90x+3.9=0
We add all the numbers together, and all the variables
-1.11x+3.9=0
We move all terms containing x to the left, all other terms to the right
-1.11x=-3.9
x=-3.9/-1.11
x=3+0.57/1.11
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