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45 . (-24) +( -10) . (-12)
=45 .2 .(-12) +(-10) . (-12)
= -12(45 . 2 +(-10) )
= -12. 80
= -960
nếu chỗ 51 . 134 là 51 . (-134) thì mk làm đc
(-134) + 51 . (-134) + (-134) . 8
= -134( 1+51+8)
= -134 . 60
= -8040
k cho mk nha
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1: \(=-24\left(45-5\right)=-24\cdot40=-960\)
2: \(=-134\left(1-51+48\right)=-134\cdot\left(-2\right)=268\)
3: \(=124\left(1-52+47\right)=124\cdot\left(-3\right)=-372\)
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(-134)+51×134+(-134)×48
=-1 x 134 + 51 x 134 + 134 x (-48)
= 134 x ( -1 + 51- 48)
= 134 x 2
= 268
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1.
( 120 . 400 ) : ( 60 . 50 . 40 )
= 48000 : ( 300 . 40 )
= 48000 : 120000
= 0,4
134 . 176 + 134 . 42 . 134 . 18
= 134 . ( 176 + 42 + 18 )
= 134 . 236
= 31624
( x + 74 ) - 318 = 200
x + 74 = 200 + 318
x + 74 = 518
x = 518 - 74
x = 444
( x : 25 + 45 ) . 67 = 8911
( x : 70 ) . 67 = 8911
x : 70 = 8911 : 67
x : 70 = 133
x = 133 . 70
x = 9310
Chúc bạn học tốt !
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\(\left(134-35\right)-\left(65+134\right)\\ =134-35-65-134\\ =\left(134-134\right)+\left(-35-65\right)\\ =0+\left(-100\right)\\ =-100\)
`(134-35)-(65+134)`
`=134-35-65-134`
`=134-134-35-65`
`=0-35-65`
`=-100`
![](https://rs.olm.vn/images/avt/0.png?1311)
-134 + 51 x 134 + (-134) x 48
= [(-132) + (-134)] + 51 x 134 + 48
= 0 + 51 x 134 + 48
= 0 + 6834 + 48
= 0 + 6882
= 6882
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a: =-45*24+120
=-1080+120
=-960
b: =134(-1+51-48)
=134*2
=268
c: =-41*59-41*2+59*41-59*2
=-2(41+59)
=-200
![](https://rs.olm.vn/images/avt/0.png?1311)
Ta có :
( -23 + 123 ) + ( -134 + 34 ) + 17
= 100 + (-100) + 17
= 0 + 17
= 17
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