123+678-78
K
Khách
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Những câu hỏi liên quan
VH
4
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26 tháng 8 2016
x + 123 - 45 = 678
x= 678 + 45 - 123
x = 600
78 - 56 + x = 234
22 + x = 234
x = 234 - 22
x = 212
Linh Nguyễn sai rồi
CM
3
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S
15 tháng 12 2016
123 + 123 = 246
456 + 67 = 523
678 + 100 = 778
78 - 90 = -12
k mik nha bn. thank you very much
15 tháng 12 2016
123+123=246
456+456=912
678+100=778
78-90=-12
TT
13
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HN
6
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TL:
123 + 678 - 78
= 801 - 78
= 723
HT
723