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0.5x-0.9(4-x)=2.7
We simplify the equation to the form, which is simple to understand
0.5x-0.9(4-x)=2.7
Reorder the terms in parentheses
0.5x+(-3.6 + 0.9x)=2.7
Remove unnecessary parentheses
+ 0.5x-3.6 + 0.9x=+2.7
We move all terms containing x to the left and all other terms to the right.
+ 0.5x + 0.9x=+2.7+3.6
We simplify left and right side of the equation.
+1.4x=+6.3
We divide both sides of the equation by 1.4 to get x.
x=4.5
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