This can be solved by grouping all terms with "n" in them on one side of the equation, and all other terms on the opposite side, then adding together like terms, and dividing both sides by the remaining coefficient of "n":
n - 16 = 2n + 12 + 3n
∴ n - 2n - 3n = 12 + 16
∴ -4n = 28
∴ n = -7
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-12=m+4 -16=m
You plug in the values of x and y and solve 12x + 16y = ? 12(1) + 16(2) = 12 + 32 = 44
It does not.
h=16
12 divided by 3 equals 4. Then, 4 times 3 equals 12. Finally, 4 plus 12 equals 16.