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- 30071
Kb nhé , nội dung trong trang cá nhân cũng hay đêí ...
~ HOK TỐT ~
10 x 25 - 32 x 2 + 985 - 254 x 123 = 250 - 64 + 685 - 31242 = - 3071
Hok tốt !
Kb
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a) x – 123 = 345 b) x + 254 = 665
x = 345 + 123 x = 665 – 254
x = 468 x = 211
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397x18-18x254=(397-254)x18
=143x18
=2574
809x5-354x5=(809-354)x5
=455x5
=2275
397.18-18.254=(397-254).18
=143.18
=2574
809.5-354.5=(809-354).5
=455.5
=2275
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123 x 4 + 123 x 6 + 123 x 9 + 123
= 123 x 4 + 123 x 6 + 123 x 9 + 123 x 1
= 123 x (4 + 6 + 9 + 1)
= 123 x 20
= 2460
Đáp số : 2460
123 x 4 + 123 x 6 + 123 x 9 +123
= 123 x 4 + 123 x 6 + 123 x 9 +123 x 1
= 123 x (4 + 6 + 9 + 1)
= 123 x 20
= 2460
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