Mathematics, 10.04.2021 06:40, alecnewman2002

Translate the following sentence into an equation using n for the unknown number. Then solve for n. when 15 is decreased by three times a number, the result is 21
a.
15 - 372 = 21
n = -2
b.
312 - 15 = 21
n = -2
C.
31 - 15 = 21
n = 12
d.
15 - 3n2 = 21
n-2

Translate the following sentence into an equation using n for the unknown number. Then solve for n.

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Translate the following sentence into an equation using n for the unknown number. Then solve for n....