Q: Solve 3 plus 2n equals 4n plus 7?

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12+4n = 2n12+4n-4n = 2n-4n12 = -2n-1/2(12 = -2n)-6 = n

Move the 2n over the equals sign. Become 4n (as 6n-2n= 4n) and then if 4n=16 then n=4.

3 + 3n = 9 + 2n + 4n n = -2

4n - 2n = 84 2n = 84 n = 42

5n-2+2=4n 5n=4n n=0

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12+4n = 2n12+4n-4n = 2n-4n12 = -2n-1/2(12 = -2n)-6 = n

Move the 2n over the equals sign. Become 4n (as 6n-2n= 4n) and then if 4n=16 then n=4.

3n + 2n = 7 + 4n 5n = 7 + 4n 5n - 4n = 7 n = 7

3 + 3n = 9 + 2n + 4n n = -2

4n+20=53-2n

2n+2n equals 4n

4n - 2n = 84 2n = 84 n = 42

4n

(4n + 1)*(2n + 6) = 8n2 + 26n + 6

4n - 2n = 18 Therefore, 2n = 18 Therefore, n = 18/2 = 9

5n-2+2=4n 5n=4n n=0

4n