Question

Solve by substitution method: x - y = 5 ,2x + 2y =22

Answer 1

x = 8

y = 3

Explanation:

x - y = 5 => x = 5 + y

2x + 2y = 22

x = 5 + y

2(5 + y) + 2y = 22

x = 5 + y

10 + 2y + 2y = 22

x = 5 + y

4y = 12

x = 5 + y

y = 3

x = 5 + 3

y = 3

x = 8

y = 3

Answer 2

Answer: y=3 x=8

Explanation:

x= 5+y

2(5+y)+2y=22

10+2y+2y=22

4y+10=22

4y=12

y=3

x=8