(76*35+76*19):54
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![](https://rs.olm.vn/images/avt/0.png?1311)
(76*35+76*19):54
\(=\left[76x\left(35+19\right)\right]:54\)
\(=76x54:54\)
\(=76\)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(-54.76+12.\left(-76\right)-76.\left(-34\right)\)
\(=54.\left(-76\right)+12.\left(-76\right)-\left(-76\right).34\)
\(=-76.\left(54+12-34\right)\)
\(=-76.32\)
\(=-2432\)
-54*76+12*(-76)-76*(-34)
=(-4104)+(-912)-(-2584)
=-2429
k cho mk nhé
![](https://rs.olm.vn/images/avt/0.png?1311)
a)(167+35)+(134-167-35) b)(43-31+57)-(243-345+54) c)(89-76)+(76-89+28) d)(243+46-345)-(243-345+54)
=167+35+134-167-35 =43-31+51-43+345-54 =89-76+76-89+28 =243+46-345-243+345-54
=167-167+35-35+134 =12+51-43+345-54 =0+28 =289-345-243+345-54
=0+0+134 =63-43+291 =28 =(-56)-243+345-54
=134 =20+291=311 =(-299)+345-54
=46-54=-8
![](https://rs.olm.vn/images/avt/0.png?1311)
9342 chắc chắn 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
![](https://rs.olm.vn/images/avt/0.png?1311)
b) 35 x 24 + 35 x 76 +55 x 19 +55 x 91
= 35 x ( 24 + 76 ) + 55 x ( 19 + 91 )
= 35 x100 +55 x 100
= 100 x ( 55 + 35 )
= 90 x 100 =9 000
c) \(6\cdot25\cdot4+4\cdot19\cdot6-2\cdot14\cdot12\)
\(=24\cdot25+24\cdot19-24\cdot14\)
\(=24\left(25+19-14\right)\)
\(=24\cdot30=720\)
d) \(19\cdot64+76\cdot34\)
\(=76\cdot19+76\cdot34\)
\(=76\left(19+34\right)=76\cdot53=4028\)
a) 2 x 16 x 50 x 25
= ( 2 x 50 ) x ( 16 x 25 )
= 100 x 400
= 40 000
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(76\times35+76\times19\right):54\)
\(=\left[76\times\left(35+19\right)\right]:54\)
\(=\left[76\times54\right]:54\)
\(=76\times54:54\)
\(=76\times\left(54:54\right)\)
\(=76\times1=76\)
~ Hok tốt ~
Lời giải
\(=\left[76.\left(35+19\right)\right]:54\)
\(=\left[76.54\right]:54\)
\(=4104:54\)
\(=76\)