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.9(2)-2.1+.9=2(5-2)
We simplify the equation to the form, which is simple to understand
.9(2)-2.1+.9=2(5-2)
Reorder the terms in parentheses
+(+1.8)-2.1+.9=2*(+3)
Remove unnecessary parentheses
+1.8-2.1+.9=+2+*(+3+)
Reorder the terms in parentheses
+1.8-2.1+.9=+(+6)
Remove unnecessary parentheses
+1.8-2.1+.9=+6
We move all terms containing to the left and all other terms to the right.
0=+6-1.8+2.1-0.9
We simplify left and right side of the equation.
0=+5.4
0=5.4
The left and right sides are not equal, therefore there is no solution. This equation is invalid.
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