Question

Use elimination to find the solution to the system of equations. 9r + 2y = 59

2r + 5y = 4
A. I = I = 7, y = -2
В. 1 41 I = 2 , Y = 9
C. I = 5, y 14 5 55
D. 1 = 9, y = 2​

Answer 1

r = 7

y = -2

Explanation:

9r + 2y = 59 (Multiply this by 5)

2r + 5y = 4 (Multiply this by -2)

45r + 10y = 295

-4r - 10y = -8

41r = 287

r = 7

2r + 5y = 4

2(7) + 5y = 4

14 + 5y = 4

5y = 4 - 14

5y = -10

y = -2