73(8-59)-15(5-3)
Những câu hỏi liên quan
24) 15 (4-7)- 15 (5-3)
25) 73(8-59) -59(8-73)
\(\text{24) 15 (4-7)- 15 (5-3)}\)
\(=15.\left[\left(4-7\right)-\left(5-3\right)\right]\)
\(=15.\left[4-7-5+3\right]\)
\(=15.\left(-5\right)\)
\(=-75\)
\(\text{25) 73(8-59) -59(8-73)}\)
\(=73.8-73.59-59.8+59.73\)
\(=8\left(73-59\right)+59\left(-73+73\right)\)
\(=8.14+59.0\)
\(=112\)
24) 15 (4-7)- 15 (5-3)
=15. 4 − 7 − 5 − 3
= 15. 4 − 7 − 5 + 3
= 15. −5
= −75
25) 73(8-59) -59(8-73)
= 73.8 − 73.59 − 59.8 + 59.73
= 8 73 − 59 + 59 −73 + 73
= 8.14 + 59.0
= 112
15 (4-7)- 15 (5-3)
=15. 4 − 7 − 5 − 3
= 15. 4 − 7 − 5 + 3
= 15. −5
= −75
25) 73(8-59) -59(8-73)
= 73.8 − 73.59 − 59.8 + 59.73
= 8 73 − 59 + 59 −73 + 73
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Tính hợp lý:
15 x (4-7) -15 x (5-3)
73 x (8-59)-59 x(8-73)
15 × (4 - 7) - 15 × (5 - 3)
= 15 × (-3) - 15 × 2
= 15 × (-3 - 2)
= -15 × 5
= -75
--------
73 × (8 - 59) - 59 × (8 - 73)
= 73 × 8 - 73 × 59 - 59 × 8 + 59 × 73
= 8 × (73 - 59) + 73 × (59 - 59)
= 8 × 14 + 73 × 0
= 8 × 14
= 112
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15 x (4-7) - 15 x (5-3)
= 15 x (-3) - 15 x (-2)
= 15 x (-3 - (-2))
= 15 x (-1)
= -15
73 x (8-59) - 59 x (8-73)
= 73 x 8 - 59 x 73 - 59 x (-65)
= 73 x 8 - 59 x (73 - (-65))
= 73 x 8 - 59 x 8
= 8 x (73-59)
= 8 x 14
= 112
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a) 15 × (4 - 7) - 15 × (5 - 3)
= 15 × (-3) - 15 × 2
= 15 × (-3 - 2)
= -15 × 5
= -75
b) 73 × (8 - 59) - 59 × (8 - 73)
= 73 × 8 - 73 × 59 - 59 × 8 + 59 × 73
= 8 × (73 - 59) + 73 × (59 - 59)
= 8 × 14 + 73 × 0
= 8 × 14
= 112
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1)thực hiện phép tinh ( hợp lí nếu có thể )
a) 73.(8-59) - 59.(8-73)
b)199.(15-17) - 199.( -17 + 5 )
a) \(73\left(8-59\right)-59\left(8-73\right)\)
\(=73.8-73.59-59.8+59.73\)
\(=8.\left(73-59\right)\)
\(=8.14=112\)
b) \(199\left(15-17\right)-199\left(-17+5\right)\)
\(=199.15-199.17+199.17-199.5\)
\(=199.\left(15-5\right)\)
\(=199.10=1990\)
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a) 73.(8-59) - 59.(8-73)
= 73 . 8 - 73 . 59 - 59 . 8 + 59 . 73
= - 73 . 59 + 59 . 73 + 73 . 8 - 59 . 8
= 0 + 8 ( 73 - 59 )
= 8 . 14
= 112
b)199.(15-17) - 199.( -17 + 5 )
= 199 . 15 - 199 . 17 - 199 . (- 17 ) + ( - 199 ) . 5
= 199 . 15 - 19 . 17 + 199 . 17 + ( - 199 ) . 5
= 199 . 15 - 0 + 199 . ( - 5 )
= 199 . [ 15 - ( - 5 ) ]
= 199 . 10
= 1990
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tinh 1 cach hop li; a, -39.(5-99)+99.(10-39) b,153.177-153.77...
Đọc tiếp
tinh 1 cach hop li; a, -39.(5-99)+99.(10-39) b,153.177-153.77 c, 199.(15-17)-99.(-17+5) d, 73.(18-59)-59.(8-73)
a: =-39*5+39*99+99*10-99*39
=-39*5+99*10
=990-195=795
b: =153(177-77)=15300
c: =199*15-199*17+99*17-99*5
=17(-100)+199*15-99*5
=790
d: =73*18-73*59-59*8+59*73
=73*18-59*8
=842
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1) thực hiện phép tính ( hợp lý nếu có thể )
a) 199(15-17)-199(-17+5)
b) 73(8-59)-59(8-73)
a) \(199\left(15-17\right)-199\left(-17+5\right)\)
\(=199.15-199.17+199.17-199.5\)
\(=199.\left(15-5\right)\)
\(=199.10=1990\)
b) \(73\left(8-59\right)-59\left(8-73\right)\)
\(=73.8-73.59-59.8+59.73\)
\(=8\left(73-59\right)\)
\(=8.14=112\)
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Tính hợp lí:
73.(8-59)-59.(8-73)159.(18-59)-59.(18-159)-145.(13-57)+57.(10-145)17.(15-16)+16.(17-20)-38.(25-4)+35.(-4+38)23.(145-17)-145.(23-6)199.(15-17)-199.(-17+5)-39.(5-99)+99.(10-39)
1.73.(8-59)-59.(8-73)
=73.8-73.59-59.8-59.73
=73.(59-59)-8.(73-59)
=73.0-8.14
=0-112
=-112
2.159.(18-59)-59.(18 - 159)
=159.18-59.159-59.18-59.159
=159.(59-59)-18.(159-59)
=159.0-18.100
=0-1800
=-1800
73.(8-59)-59(8-73)
73.(8-59)-59.(8-73)
=73.8-73.59-59.8+59.73
=(73.8-59.8)+(73.59-59.73)
=8.(73-59)+0
=8.14+0=112+0=0
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Xem thêm câu trả lời
\(73(8-59)-59(8-73)\)
73.(8-59)--59.(8-73)
73.-51-59.-65
-3723--3835
112
\(73\left(8-59\right)-59\left(8-73\right)\)\(=73.8-73.59-59.8+73.59\)
\(=\left(-73.59+73.59\right)+8\left(73-59\right)\)
\(=8.14=112\)
HỌC TỐT ><
\(73.\left(8-59\right)-59.\left(8-73\right)\)
\(=73.8-73.59-59.8+59.73\)
\(=59.\left(-73+73\right)+8\left(73-59\right)\)
\(=59.\left(73-73\right)+8.14\)
\(=0+112=112\)
thực hiện phép tính :73.( 8 - 59 ) - 59.( 8 - 73 ) b,159.(18 - 59) - 59( 18 -159) c, -145(13-57) + 57(10 - 145
a,
73.( 8 - 59 ) - 59.( 8 - 73 )
=73.8 -73. 59 - 59.8 - 73.59
=8(73-59)-73(59-59)
=8.14-0
=112
b,Tương tự câu a
c,Tương tự câu a
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a) 73 . ( 8 - 59 ) - 59 . ( 8 - 73) b) 159 . ( 18 - 59 ) - 59. ( 18 - 159 ) c) - 145 . ( 13 - 57 ) + 57. ( 10 - 145 )
= 73 . 8 - 73 . 59 - 59 .8 - 59 .73 = 159 . 18 - 159 . 59 - 59 . 18 - 59 . 159 = ( - 145 ) . 13 - (- 145) . 57 + 57 . 10 -57.145
= 8 . ( 72 - 59 ) - 73 . ( 59 - 59 ) = 18 . (159 - 59 ) - ( 59 - 59) - ( 159 - 159) =(-145).13-(-145).57+57.(10-145)
= 8 . 14 - 0 = 1800 - 0 - 0 = (-145).13- (-145).57 + (-135)
= 112 = 1800 = -145.(13 - 57) + (-135)
=6380 + (-135 )
=6245
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