Translate the following sentence to an equation, then solve the equation. When solving the equation use X as the variable.

Question

Forty-nine less a number is equal to the product of three and the sum of the number and seven. Find the number.

Answer 1

Let x = the number

Then, 49 - the number will be 49 - x

Sum of the number + 7 will be x + 7

So,

49 - x = x + 7 or 2x = 42 then x = 21