本课配套习题挑战模式1/5
单选题
难度系数:
1.已知方程2x+3y=6,当x=2时,y=____.当y=-1时,x=____.
A: 2,3 |
B: , |
C: |
D: 3,2 |
一次做对,真牛!
+5奖励规则>
- 提示1:5oqK5bey55+l55qE5pyq55+l5pWw55qE5YC85Luj5YWl5pa556iL5Lit77yM5rGC6Kej5YWz5LqO5Y+m5LiA5Liq5pyq55+l5pWw55qE5LiA5YWD5LiA5qyh5pa556iL
- 答案:Qw==
5oqKeD0y5Luj5YWl5pa556iLMngrM3k9Nu+8jOW+l++8mjQrM3k9Nizop6PlvpfvvJp5PTxpbWcgd2lkdGg9MTAgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvQUQvckJBQ0ZGVEprYnpqbHFwekFBQUJUMHMtV3lNNTIxLnBuZyI+77yb5oqKeT0tMeS7o+WFpeaWueeoizJ4KzN5PTbvvIzlvpfvvJoyeC0zPTYs6Kej5b6XeD08aW1nIHdpZHRoPTEwIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzNFL0ZBL3JCQUNKbFRKa2J5amwyS0xBQUFCV1FNZUJYRTczOS5wbmciPg==
本课配套习题挑战模式2/5
单选题
难度系数:
2.若y=2x+1,且3y+x-10=0,则x=____.
A: 2 |
B: 1 |
C: 3 |
D: 4 |
一次做对,真牛!
+5奖励规则>
- 提示1:55So5Luj5YWl5raI5YWD55qE5pa55rOV6KejeOeahOWAvA==
- 答案:Qg==
5oqKeT0yeCsx5Luj5YWlM3kreC0xMD0w77yM5b6X77yaPGltZyB3aWR0aD0xODcgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0YvM0IvckJBQ0oxVEprYi1TbElLTUFBQUMtV0R3Q0xRNzcxLnBuZyI+LOino+W+l++8mng9MQ==
本课配套习题挑战模式3/5
单选题
难度系数:
3.从方程组中,求出x与y的关系是()
A: x+y=-1 |
B: x+y=1 |
C: x+y=9 |
D: x+y=-9 |
一次做对,真牛!
+5奖励规则>
- 提示1:6YCa6L+H5LiA5Liq5pa556iL6KGo56S65Ye6bSzmiopt55qE6KGo6L6+5byP5Luj5YWl5Y+m5LiA5Liq5pa556iL77yM5Y2z5b6XeCx555qE5YWz57O7
- 答案:Qw==
5pyJ4pGg77yM5b6X77yabT00LXgg4pGi77yb5oqK4pGi5Luj5YWl4pGh77yM5b6X77yaeS01PTQteC7mlbTnkIbvvIzlvpd5K3g9OQ==
本课配套习题挑战模式4/5
单选题
难度系数:
4.用代入法解方程组时,以下各式中代入正确的是 ( )
A: 3a=2×b+1 |
B: 3a=2×b+1 |
C: 3a=2×a+1 |
D: 3a=2a×6a+1 |
一次做对,真牛!
+5奖励规则>
- 提示1:5Yip55So5pa556iLMmE9M2LvvIznlKhh6KGo56S6Yjvku6PlhaXlj6bkuIDkuKrmlrnnqIvvvIzljbPlj68=
- 答案:Qw==
55SxMmE9M2LvvIzlvpfvvJpiPTxpbWcgd2lkdGg9OSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRi8zQi9yQkFDSjFUSmtjYXlwUVlsQUFBQk9kZXBIS0k4NzMucG5nIj5hLOaKimI9PGltZyB3aWR0aD05IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzNGLzNCL3JCQUNKMVRKa2NheXBRWWxBQUFCT2RlcEhLSTg3My5wbmciPmHku6PlhaUzYT0yYisx77yM5b6XM2E9MsOXPGltZyB3aWR0aD0yOSBoZWlnaHQ9NDkgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zRS9GQS9yQkFDSmxUSmtjYWdWVUtMQUFBQmxNYVVOMGc4NzgucG5nIj5hKzHjgILmlYXpgIlD
本课配套习题挑战模式5/5
单选题
难度系数:
5.已知x+3y=0,则的值为()
A: |
B: - |
C: 3 |
D: -3 |
一次做对,真牛!
+5奖励规则>
- 提示1:55SoeeihqOekungs5oiW55SoeOihqOekunnlnYflj6/vvIzku47ogIzkvb88aW1nIHdpZHRoPTg1IGhlaWdodD01NSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzczLzcyL3JCQUNFMVRKa2NteWR0S0xBQUFERGo2cGdIQTYwMS5wbmciPuWPquWQq+acieS4gOS4quacquefpeaVsA==
- 答案:Qg==
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