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-(7+9)=x
We simplify the equation to the form, which is simple to understand
-(7+9)=x
Remove unnecessary parentheses
-16=x
We move all terms containing x to the left and all other terms to the right.
-1x=+16
We simplify left and right side of the equation.
-1x=+16
We divide both sides of the equation by -01 to get x.
x=-16
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