Question

find a number such that when 15 is subtracted from 7 times the number, the result is 10 more than twice the number.

Answer 1

5

Explanation:

Let x be the number.

7x - 15 = 10 + 2x

⇒ 7x - 2x = 10 + 15

⇒ 5x = 25

⇒ x = 5