Question

Which ordered pair is the solution set for the system of equations below? 2x + y = 18 x – y = –6

Answer 1

(4,10) is the solution

Explanation:

2x + y = 18

x – y = –6

Using elimination

2x + y = 18

x – y = –6

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3x = 12

Dividing each side by 3

3x/3 = 12/3

x =4

Now we can find y

2x+y = 18

2(4) +y =18

8+y = 18

Subtracting 8 from each side

8-8+y = 18-8

y=10

(4,10) is the solution