方程5x+7y=21有無(wú)數(shù)無(wú)數(shù)組解;二元一次方程x+3y=7的非負(fù)整數(shù)解是x=7 y=0
;x=4 y=1
;x=1 y=2
x=7 y=0
;x=4 y=1
;x=1 y=2
.
x = 7 |
y = 0 |
x = 4 |
y = 1 |
x = 1 |
y = 2 |
x = 7 |
y = 0 |
x = 4 |
y = 1 |
x = 1 |
y = 2 |
【考點(diǎn)】解二元一次方程.
【答案】無(wú)數(shù);
;
;
x = 7 |
y = 0 |
x = 4 |
y = 1 |
x = 1 |
y = 2 |
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/4/20 14:35:0組卷:72引用:1難度:0.9