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5X+7Y+3Z=253X-Y-6Z=2急急急急急急急急急急急··········································

题目详情
5X+7Y+3Z=25
3X-Y-6Z=2
急急急急急急急急急急急··········································
▼优质解答
答案和解析
z=-1
x=0
y=4
算出x=(39+39z)\26
y=(65-39z)\26
带进式1或2
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