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(2.8)(-4)=x
We simplify the equation to the form, which is simple to understand
(2.8)*(-4)=x
Reorder the terms in parentheses
multiplication of parentheses
(-11.2)=x
Remove unnecessary parentheses
-11.2=x
We move all terms containing x to the left and all other terms to the right.
-1x=+11.2
We simplify left and right side of the equation.
-1x=+11.2
We divide both sides of the equation by -01 to get x.
x=-11.2
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