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9999999(78)-4=x
We simplify the equation to the form, which is simple to understand
9999999(78)-4=x
Reorder the terms in parentheses
+(+779999922)-4=x
Remove unnecessary parentheses
+779999922-4=+x
We move all terms containing x to the left and all other terms to the right.
-1x=-779999922+4
We simplify left and right side of the equation.
-1x=-779999918
We divide both sides of the equation by -01 to get x.
x=779999918
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