Đồng đoàn
150
30
Câu hỏi:
100 -|x+1|=90
Câu trả lời của bạn: 16:44 28/11/2020
x=9;-11
tìm hai số x và y, biết
Câu trả lời của bạn: 16:38 28/11/2020
x=9;y=5
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