本课配套习题挑战模式1/5
单选题
难度系数:
1.下列四个方程中,是二元一次方程的是( )
A: x-3=0 |
B: 2x-y=5 |
C: 3xy-5=8 |
D: +y= |
一次做对,真牛!
+5奖励规则>
- 提示1:5pa556iL5Lit5ZCr5pyJ5Lik5Liq5pyq55+l5pWw77yM5bm25LiU5pyq55+l5pWw55qE6aG555qE5qyh5pWw6YO95pivMe+8jOi/meagt+eahOaWueeoi+WPq+WBmuS6jOWFg+S4gOasoeaWueeoiw==
- 答案:Qg==
Qe+8jumUmeivr++8jOWPquWQq+acieS4gOS4quacquefpeaVsO+8m0Iu5q2j56Gu77ybQy7plJnor6/vvIzmrKHmlbDkuLoy5qyh77ybRC7plJnor6/vvIzliIblvI/mlrnnqIvjgILmlYXpgIlC
本课配套习题挑战模式2/5
单选题
难度系数:
2.下列方程组中,是二元一次方程组的是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5oqK5YW35pyJ55u45ZCM5pyq55+l5pWw55qE5Lik5Liq5LqM5YWD5LiA5qyh5pa556iL5ZCI5Zyo5LiA6LW377yM5bCx57uE5oiQ5LqG5LqM5YWD5LiA5qyh5pa556iL57uE
- 答案:Qg==
Qe+8jumUmeivr++8jOWQq+acieS4ieS4quacquefpeaVsO+8m0Iu5q2j56Gu77ybQy7plJnor6/vvIzmrKHmlbDkuLoy5qyh77ybRC7plJnor6/vvIzliIblvI/mlrnnqIvnu4TjgILmlYXpgIlCPGJyPg==
本课配套习题挑战模式3/5
单选题
难度系数:
3.下列方程组中( )的解是
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5LqM5YWD5LiA5qyh5pa556iL57uE55qE5Lik5Liq5pa556iL55qE5YWs5YWx6Kej77yM5Y+r5YGa5LqM5YWD5LiA5qyh5pa556iL57uE55qE6Kej44CC
- 答案:Qw==
5oqKPGltZyB3aWR0aD0xMzUgaGVpZ2h0PTU1IHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0YvM0IvckJBQ0oxVEprWmlTZ2djUEFBQURoODRNOEZFODQ2LnBuZyI+5Luj5YWl5Zub5Liq6YCJ6aG555qE5LqM5YWD5LiA5qyh5pa556iL57uE5Lit77yM5Y+q5pyJQ+mhueaIkOeri+OAguaVhemAiUM=
本课配套习题挑战模式4/5
单选题
难度系数:
4.已知是方程ax-2y=2的一个解,则a=____.
A: 2 |
B: 4 |
C: 5 |
D: 7 |
一次做对,真牛!
+5奖励规则>
- 提示1:5oqKPGltZyB3aWR0aD03NyBoZWlnaHQ9NjAgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BQS9BRC9yQkFDRkZUSmtaLXlNOWY4QUFBRGhWbjk0am83NzkucG5nIj7ku6PlhaXmlrnnqItheC0yeT0y
- 答案:Qg==
5oqKPGltZyB3aWR0aD03NyBoZWlnaHQ9NjAgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9BQS9BRC9yQkFDRkZUSmtaLXlNOWY4QUFBRGhWbjk0am83NzkucG5nIj7ku6PlhaXmlrnnqItheC0yeT0y77yM5b6XPGltZyB3aWR0aD05NyBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9BQS9BRC9yQkFDRkZUSmtaX1RRcXFZQUFBQ0EwMTRMWm83MDMucG5nIj4s6Kej5b6X77yaYT00
本课配套习题挑战模式5/5
单选题
难度系数:
5.
若x3m−3−2yn−1=5 是关于x、y的二元一次方程,则m=____,n=____.
A: 43 ,2 |
B: 2,2 |
C: 3,4 |
D: 5,2 |
一次做对,真牛!
+5奖励规则>
- 提示1:PHA+55CG6Kej5LqM5YWD5LiA5qyh5pa556iL77yM5a+5eCx55oyH5pWw55qE56Gu5a6aPC9wPg==
- 答案:QQ==
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