2X+4Y=44 3X+5Y=62.5 求X=().Y=()
3个回答
2X+4Y=44
3X+5Y=62.5
6X+12Y=132
6X+10Y=125
2Y=7
Y=3.5
2X+14=44
2X=30
X=15
X=15
Y=3.5
相关问题
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