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.9(x-2.1)=3.96
We move all terms to the left:
.9(x-2.1)-(3.96)=0
We add all the numbers together, and all the variables
.9(x-2.1)-3.96=0
We multiply parentheses
0.9x-1.89-3.96=0
We add all the numbers together, and all the variables
0.9x-5.85=0
We move all terms containing x to the left, all other terms to the right
0.9x=5.85
x=5.85/0.9
x=6+0.45/0.9
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