27 . 36 + 27 . 64 + 41 . 175 - 41 . 75
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b) 36.28+36.82+64.69+64.41
= 36.(28+82)+64.(69+41)
=36.110+64.110
=(36+64).110
=100.110
=11000.( phần a mk nghĩ sau )
b) = 36 . (28+82) + 64 . (69+41)
= 36 . 110 + 64 . 110
= (36+64) . 110
= 100 . 110
= 11000
mik đầu tiên nhé bạn !
a) 2.31.12+4.6.42+8.27.3
=24.31+24.42+24.27
=24.(31+42+27)
=24.100
=2400
b) 36.28+36.82+64.69+64.41
=36.(28+82)+64.(69+41)
=36.110+64.110
=110.(36+64)
=110.100
=11000
a) 2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3
= 24 . 31 + 24 . 42 + 24 . 27
= 24 . (31 + 42 + 27)
= 24 . 100
= 2400
b) 36 . 28 + 36 . 82 + 64 . 69 + 64 . 41
= 36 . (28 + 82) + 64 . (69 + 41)
= 36 . 110 + 64 . 110
= (36 + 64) . 110
= 100 . 110
= 11000
a.2.31.12+4.6.42+8.27.3
=2.12.31+4.6.42+8.3.27
=24.31+24.42+24.27
=24.(31+42+27)
=24.100
=2400
b.36.28+36.83+64.69+64.41
=36.(28+83)+64.(69+41)
=36.111+64.111
=(36+64).111
=100.111
=11100
a) 2.31.12+4.6.42+8.27.3
=24.31+24.42+24.27
=24.(31+42+27)
=24.100
=2400
b) 36.28+36.82+64.69+64.41
=36.(28+82)+64.(69+41)
=36.110+64.110
=110.(36+64)
=110.100
=11000
a = 24 . 31 + 24 . 42 + 24 . 27
= 24 . 100
= 2400
b = 36 . ( 28 + 82 ) + 64 . ( 69 + 41 )
= 36 . 110 + 64 . 110
= 110 . ( 36 + 64 )
= 100 . 100 = 11000
a) - 36 . (16 - 41) - 16 . (41 - 36)
= -36.(-25)-16.5
= 900-80
= 820
b) - 15. (-27 + 30) - 27 . (30 - 15) - 30 . (5 - 27)
= -15.3-27.15-30.(-22)
= -45-405.(-660)
= (-450).(-660)
= 297000
a) A = 2.31.12 + 4.6.42 + 8.27.3
= 24.31 + 24.42 + 24.27
= 24.(31 + 42 + 27)
= 24.100 = 2400
b) B = 36.28 + 36.82 + 64.69 + 64.41
= 36.(28 + 82) + 64.(69 + 41)
= 36.110 + 64.110
= 110.(36 + 64)
= 110.100
= 11000
a, 2 . 31 . 12 + 4 . 6 . 42 + 8 . 27 . 3
= 24 . 31 + 24 . 42 + 24 . 27
= 24 . ( 31 + 42 + 27 )
= 24 . 100 = 2400
b, 36 . 28 + 36 . 82 + 64 . 69 + 64 . 41
= 36 . ( 28 + 82 ) + 64 . ( 69 + 41 )
= 36 . 110 + 64 . 110
= 110 . ( 36 + 64 )
= 110 . 100 = 11000
a) 2.31.12+4.6.42+8.27.3
= [(2.12).31]+[(4.6).42]+[(8.3).27]
= 24.31+24.42+24.27
= 24.(31+42+27)
= 24.100
= 2400
b) 36.28+36.82+64.69+64.41
= (36.28+36.82)+(64.69+64.41)
= [36.(28+82)]+[64.(69+41]
= 36.110+54.110
= 110.(36+54)
= 110.90
= 200
a) 2 . 31 .12 + 4 .6 .42 + 8 .27 .3
= 2 .12 .31 + 4 . 6 .42 + 8 . 3 .27
= 24 . 12 + 24 . 42 + 24 . 27
= 24 . ( 12 + 42 + 27 )
= 24 . 86
= 2064
b) 36 . 28 + 36 . 82 + 64 . 69 + 64 . 41
= 36. ( 28 + 82 ) + 64 . ( 69 + 41 )
= 36 . 110 + 64 . 110
= ( 36 + 64 ) . 110
= 100 . 110
= 11000
27*36+7*64+41*175-41*75
=27(36+64)+41(175-75)
=27*100+41*100
=(27+41)*100
=68*100=6800