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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 8: CMR: (30^4)^1975×15^1870×4^935-(7^5)^1954. Chia hết cho 23 Ai giúp mình với!

Toán Lớp 8: CMR: (30^4)^1975×15^1870×4^935-(7^5)^1954. Chia hết cho 23
Ai giúp mình với!

Comments ( 1 )

  1. (30^4)^1975×15^1870×4^935-(7^5)^1954
    =30^7900×15^1870-9^9770
    =30^7900×30^1870-7^9770
    =30^9770-7^9770
    =(30-7)k chia hết cho 23

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222-9+11+12:2*14+14 = ? ( )