Question

1) In order for the addition method to eliminated x from the two equations in a system, what

must be true about the x-terms in the two equations?

Answer 1

The coefficients of the x-terms have opposite values.

Explanation:

The x terms are opposite values (the coefficients of the x-terms have opposite values( one negative or one positive so that when added the answer is zero

Example y + 24x = 50

+ 2y - 24x = 40

3y = 90