if 3 * n = 7, then dividing both sides by three then cancelling the threes on the left hand side, you get n = 7 / 3, so n = 2.33
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That question has no answer since n must equal 3 and if you substitute n in 3n-2, you will see that it does not equal 3, it equals 7.
3n + 4n = 42 7n = 42 n = 42/7 n = 6
How do you find the answer to this equation: 3n equals 18
3n = 0.138 n = 0.046
3n+5=2n+7 subtract 2n on both sides. n+5=7 subtract 5 to the other side. n=2 the answer to n is 2. Hoped that helped. (: