Question 198951
{{{-7(n+9)-(7+2n)=-10n}}} Start with the given equation.



{{{-7n-63-7-2n=-10n}}} Distribute.



{{{-9n-70=-10n}}} Combine like terms on the left side.



{{{-9n=-10n+70}}} Add {{{70}}} to both sides.



{{{-9n+10n=70}}} Add {{{10n}}} to both sides.



{{{n=70}}} Combine like terms on the left side.



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Answer:


So the solution is {{{n=70}}}