Toán Lớp 6: 21:[(1 245 + 987):23 – 15.12]+21 = bao nhiêu
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Toán Lớp 6: 21:[(1 245 + 987):23 – 15.12]+21 = bao nhiêu
Comments ( 2 )
21:[(1245 + 987):2^3 – 15.12]+21
=21:[2232:8-180]+21
=21:[279-180]+21
=21:99+21
=7/33+21
=700/33
@Ki ng
Lời giải và giải thích chi tiết:
21 × [(1245+987) : 2^3 – 15 × 12 ] + 21
=21×(2232:8-15×12)+21
=21×(279-180)+21
=21×(279-180+1)
=21×100
=2100