Mathematics
Junior High
ใๆฅๅ๐จใๆๆฅใในใใชใฎใงๆฉใใซๅ็ญใใฆใใ ใใ๐โโ๏ธ
๏ผ3๏ผใฎๅ้กใงใใฎใใใช็ญใใซใชใฃใใจใใฉใฎใใใซใฐใฉใใซๆธใใฐใใใฎใๆใใฆใใ ใใ๐โโ๏ธ๐โโ๏ธ๐โโ๏ธ
(1)x+3y=-6
y=
(2) 2xy-5=0
(3) 3x+2y=5
8
y=2x-5
y=
x-2
3 5
ยทx+ยท
2
ๅฅ่งฃ
ๅฅ่งฃ
ๅฅ่งฃ
31
8
4
0
-4
8
8
IC
2็น(0,-2), (-60 )
ใ้ใ็ด็ทใใฒใใ
2็น(0, -5), (1,-3)
ใ้ใ็ด็ทใใฒใใ
2็น (1,1), (3, 2)
ใ้ใ็ด็ทใใฒใใ
IC
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