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1+(7n-18)=-9
We simplify the equation to the form, which is simple to understand
1+(7n-18)=-9
Remove unnecessary parentheses
+1+7n-18=-9
We move all terms containing n to the left and all other terms to the right.
+7n=-9-1+18
We simplify left and right side of the equation.
+7n=+8
We divide both sides of the equation by 7 to get n.
n=1.14285714286
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