Question

Julio says, "If you subtract 17 from my number and multiply the difference by - 3, the result is
- 39." What is Julio's number?

Julio's number is?

Answer 1

Answer:

30

Step-by-step explanation:

first, create two equations.

let x = Julio's number and y = answer for Julio's number substrates 17

$x - 17 = y \\ y ( - 3) = - 39$

by using substitution method, you will get

$x = 30 \\ y = 13$

so the answer is 30