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3n + 4 = 7(- 4 from both sides)3n = 3(divide both sides by 3)n = 1
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3n+1=7 3*2+1=7
3n + 6 = n + 202n = 14n = 7
6n - 4 - 3 = 3n + 10 + 4n -7 = 7n - 6n + 10 -17 = n
n=-9.6
3n + 4n = -14 7n /7 = -14 /7 n = -2