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n = 26
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10n = 7n + 4 + 2n so 10n = 9n + 4 Subtract 9n from both sides: n = 4
-26
The equation N-10 plus 9N-e equals 10N-3. This is a math problem.
9n + 18 = 81 9n = 63 n = 7
it is 10n