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3n+8=a To find the value of n, you need to know the value of a.
If you mean -17 = 15n -20 then the value of n is 1/5
3n+20=170 subtract 20 3n=150 divide by 3 n=50
First, you give each integer a value. X or N are common. The integers would then be N, N + 2, N + 4.That would make 3(N) - 20 = N + 4. Subtract N from both sides and add 20, so you get:3N - N (=2N) - 20 + 20 = N - N + 4 + 20.That leaves you with 2N = 24, and if you divide both sides by 2, that gives you:N = 12.Thus, the three integers are:12, 14, 16