Question

Solve the equation using elimination. Write your answer as an ordered pair.

Answer 1

Answer:

(-3, 1).

Step-by-step explanation:

2x + 7y =  1        -------------(A)

x + 5y  =  2       Multiply this by -2:

-2x - 10y = -4    Add this equation to equation (A):

0 - 3y = -3

3y = 3

y = 1.

Substitute this in equation (A):

2x + 7(1) = 1

2x = -6

x = -3.

Check if these 2 values are correct in the second equation:

-3 + 5(1) = 2

2 = 2.