3X+4Y=10 (1)
4X+3Y=11 (2)
(1)+(2)
7X+7Y=21
X+Y=3
3X+3Y=9 (3)
(2)-(3)
X=2
Y=3-X=1
3X+4Y=10 4X+3Y=11
3X+4Y=10 4X+3Y=11
解二元一次方程
解二元一次方程
數(shù)學人氣:928 ℃時間:2020-10-01 09:16:50
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