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-20-(-50)=x/9
We simplify the equation to the form, which is simple to understand
-20-(-50)=x/9
Simplifying:
-20-(-50)=0.111111111111x
Remove unnecessary parentheses
-20+50=0.111111111111x
We move all terms containing x to the left and all other terms to the right.
-0.111111111111x=+20-50
We simplify left and right side of the equation.
-0.111111111111x=-30
We divide both sides of the equation by -00.111111111111 to get x.
x=270
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