Respuesta :

15!

x + 2y = ?
(7) + 2(4) = ?
7 + 8 = 15

Given that if x = 7 and y = 4, the value of x + 2y = 15

Given the following:

x = 7

y = 4

Required:

Find the value of x + 2y.

Therefore, substitute x = 7 and y = 4 into the algebraic expression, x + 2y.

  • Thus, plug in the values into the expression:

(7) + 2(4) = 7 + 8

x + 2y = 15

Therefore, given that if x = 7 and y = 4, the value of x + 2y = 15

Learn more about algebraic expressions on:

https://brainly.com/question/12470265