Question

Three times a number decreased by 5 gives the result 16. Find the number.

Answer 1

Answer:

$let \: a \: number \: be \: x \\ 3x - 5 = 16 \\ 3x = 16 + 5 \\ 3x = 21 \\ x = 7 \: \: therefore \: the \: number \: \: \: is \: 7$