n-10+(9n-3)=10n-13
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n - 10 + 9n - 3 n + 9n - 10 - 3 10n - 13
9n + n = 10n
10(N+14)=9N 10N+140=9N N=-140 I can verbalize this, I hope you can. Check 10(-140+14)=9(-140) 10(-126)=-1260 -1260=-1260
You need to get n alone.9n=45 → Divide by 9n=45/9n=5
your equation is this 9N=63 9N/9=63/9 N=7 your answer is 7