Question

What is the solution to the system of equations? {5x−2y=−164x−5y=−23

Answer 1

5x − 2y = − 16 | x 4

4x − 5y = − 23 | x 5

20x - 8y - 20x + 25 y = - 64 - (- 115)

25y - 8y = 115 - 64

17y = 51

y = 51 : 17

y = 3

5x - 2×3 = - 16

5x - 6 = - 16

5x = - 16 + 6

5x = - 10

x = - 10 : 5

x = - 2