12m + 3n - 6m + 7n6m + 10n
This question as written can be taken two ways: 9m + 6n - 3m + 7n = 6m + 13n, or (9m + 6n) - (3m + 7n) = 9m + 6n - 3m - 7n = 6m - n
(10, 2)
22n + 2.
7n + 1 = 6n + 8 7n=6n+7 (minus 1 from each side) n=7 (7n-6n equals n, you are left with n=7)
9 - 5n
10n + 3 = 7n + 53n = 2n = 2/3
10n+2
4n + 3y
7n - 2 + 3n + 4 = 7n + 3n - 2 + 4 = 10n + 2 which can be simplified to 2(5n +1)
9n-2=7n+50 7n+9n=50+2 16n=52 n= 3.25
n=6