10n+2
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-3n+5n+4 = -4 2n = -4-4 2n = -8 n = -4
3n + 4 = 7(- 4 from both sides)3n = 3(divide both sides by 3)n = 1
6n - 4 - 3 = 3n + 10 + 4n -7 = 7n - 6n + 10 -17 = n
(7n - 4)(n + 3)
3n and n = 4? 3n ( the four replaces the n 3(4) = 12 =======