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x(2)+8x+7=0
We simplify the equation to the form, which is simple to understand
x(2)+8x+7=0
Reorder the terms in parentheses
+(+2x)+8x+7=0
Remove unnecessary parentheses
+2x+8x+7=0
We move all terms containing x to the left and all other terms to the right.
+2x+8x=0-7
We simplify left and right side of the equation.
+10x=-7
We divide both sides of the equation by 10 to get x.
x=-0.7
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