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3n+18 = 39 -4n 3n+4n = 39 -18 7n = 21 n = 3
I assume you mean what is the solution for the value of n. 4n+11-7n = -13 -3n = -24 n=8
4n+13=1 -13 -134n=-12/4 /4n=-3
3 + 3n = 9 + 2n + 4n n = -2
Move the 2n over the equals sign. Become 4n (as 6n-2n= 4n) and then if 4n=16 then n=4.