5x-y=3,则:
10x-2y=6 ---------------------------(1)
3x+2y=7 ----------------------------(2)
(1)加(2),得:
13x=13
x=1
将x=1代入(1),得:
10-2y=6
10-6=2y
y=2
则:
x=1
y=2
5x-y=3,则:
10x-2y=6 ---------------------------(1)
3x+2y=7 ----------------------------(2)
(1)加(2),得:
13x=13
x=1
将x=1代入(1),得:
10-2y=6
10-6=2y
y=2
则:
x=1
y=2