Question

Find the solution to the following system of equations using the addition method. 2x - y = 5 x + y = 13

Answer 1

Explanation:

2x - y = 5

x + y = 13

3x = 18

x = 6

6 + y = 13

y = 7

(6,7)

Answer 2

x = 6

y = 7

Explanation:

2x - y = 5

x + y = 13

2x - y = 5

y = 2x - 5

x + y = 13

x + 2x - 5 = 13

3x - 5 = 13

3x = 18

x = 6

y = 2x - 5

y = 2 ( 6 ) - 5

y = 7