Question

2d - 6e = 8
6d + 10e = -4
O (1,-1)
O (1,1)
0 (-1,-1)
O (-1,1)

Answer 1

Answer:

O (-1, 1)

Step-by-step explanation:

2d - 6e = 8 | ×3 |

6d + 10e = -4 | ×1 |

6d - 18e = 24

6d + 10e = -4

___________--

-28e = 28

e = 28/-28

e = -1

2d - 6e = 8

2d - 6(-1) = 8

2d + 6 = 8

2d = 8 - 6

2d = 2

d = 2/2

d = 1