x+2y=16 (1)
2x+y=3x-y
即x=2y
代入(1)
2y+2y=16
4y=16
y=4
x=2y=8
x+2y=16 2x+y=3x-y
x+2y=16 2x+y=3x-y
還有2個(gè)問(wèn)題 呵呵
7x-3y=1 4x-5y=-17
10x+3y+1=0 4x+5y+8=0
還有2個(gè)問(wèn)題 呵呵
7x-3y=1 4x-5y=-17
10x+3y+1=0 4x+5y+8=0
數(shù)學(xué)人氣：731 ℃時(shí)間：2020-05-27 07:13:13
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