Question

1. If 2x + 3y = 14 and 3x + 2y = 12, then x + y = ?

A) 5
B) 6
C) 7
D) 8

Answer 1

• x + y = 5.2

-----------------

Given system:

• 2x + 3y = 14 and
• 3x + 2y = 12

Add up the two equations to get same coefficient on both variables:

• 2x + 3x + 3y + 2y = 14 + 12
• 5x + 5y = 26
• 5(x + y) = 26
• x + y = 26/5
• x + y = 5.2

As we see none of the choices match the answer. It means either question or answer choices are inaccurate.