Question

Solve the following system of equations. x + y = 12 x – y = 6

Answer 1

Solution given:

x+y=12......[1]

x-y=6........[2]

adding equation 1 and 2 we get

x+y+x-y=12+6

2x=18

x=18/2

x=9

substituting value of x in equation 1

9+y=12

y=12-9

y=3

x=9

y=3

Answer 2

• (9, 3)

Explanation:

Given system:

• x + y = 12
• x – y = 6

Add up equations:

• 2x = 18
• x = 9

Find y:

• 9 - y = 6
• y = 9 - 6
• y = 3