Talonrodtg169id
Answered

Solve the following systems of equations by elimination:
2x – y = -8
5x + 2y = -20

Sagot :

Mlcparra16id
2x - y = -8 ... [1]
5x + 2y = -20 ... [2]

2[1] + [2]
4x - 2y = -16
5x + 2y = -20
    9x = -36
      x = -4

2x - y = -8
2(-4) - y = -8
-8 - y = -8
-y = 0
y = 0