Question

If 5 is subtracted from three times a number, the result is 16. Find the number.

Answer 1

Let the required number be 'x'. Then, 5 subtracted from 3 times x = 3x $-$ 5.
⇒ 3x $-$ 5 = 16
Adding 5 to both sides, we get
⇒ 3x $-$ 5 + 5 = 16 + 5
⇒ 3x= 21
Dividing both sides by 3, we get
⇒ $\frac{3x}{3}=\frac{21}{3}$
⇒ x =7
Thus, the required number is 7.