(-6).43+45.(-6)+12.(-6)=(-6).(43+45+12)=(-6).100=(-600)

5.(-18-105)-105.(18-5)=5.(-18)+5.(-105)-105.(-18)+105.5=5.(-18)-105.(-18)=(-18).100=(-1800)

TICK MIK NHÉ.MIK TRẢ LỜI NHAH NHỨT NÈK

(-6).43+45.(-6)+12.(-6)=-600

5.(-18-105)-105.(18-5)=-2480

-600

-2480

tick nhé

a. (-6) . 43 + 45.(-6) + 12.(-6)

= (-6) . (43 + 45 + 12)

= (-6) . 100

= -600

b. 5.(18 - 105) - 105.(18 - 5)

= 5.18 - 5.105 - 105.18 + 105.5

= 5.18 - 105.18

= 18.(5 - 105)

= 18.(-100)

= -1800

 = (-6) . (43+45+12) = (-6) . 100 = (-600)

a,-(168+325) + ( 168 + 425 )

 = -168 - 325 + 168 + 425

= [ ( -168 ) + 168 ] + [ ( -325 ) + 425]

= 0 + 100

= 100

a,750

b,11

c,-200

d,26

-(168+325)+(168+425) = (-168+168)+(-325+425)= 0+100= 100

(38-276)+(38-65+276)=(38-38-65)+(276-276)=-65+0=-65

(269+135)+(-327-169)-(135-27)= (269-169)+(135-135)+ (327-27)=100+0+300= 400

271-(-43)+271-(-17)= (271-271)+(43+17)= 0+ 60=60

Chúc bạn học tốt

(-325). (425-27) - 425. (27-325) = -2700

Chỉ cách làm cho mk ik

\(\left(-325\right).\left(425-27\right)-425.\left(27-325\right)\)

\(=\text{ }\left[\left(-325\right).425-\left(-325\right).27\right]-\left(425.27-425.325\right)\)

\(=\left(-325\right).425-\left(-325\right).27-425.27+425.325\)

\(=\text{ }\left[\left(-325\right).425+425.325\right]-\text{ }\left[\left(-325\right).27+425.27\right]\)

\(=\text{ }\left\{425.\text{ }\left[\left(-325\right)+325\right]\right\}-\text{ }\left\{27.\text{ }\left[\left(-325+425\right)\right]\right\}\)

\(=\left(425.0\right)-\left(27.100\right)\)

\(=0-2700\)

\(=-2700\)

a,9.3.4.25

= 27.100

= 2700

b, 12.125.54

= 3.4.125.54

= 125.4.3.54

= 500.162

= 81000

c: \(=72\cdot14+72\cdot7+72\cdot19=72\cdot40=2880\)

d: \(=1700\cdot7-1700\cdot6=1700\)

e: Số số hạng là (65-1)/4+1=17(số)

Tổng là: \(\dfrac{65+1}{2}\cdot17=33\cdot17=561\)

a) \(-75+\left(-325\right)+\left|-45\right|-\left(-125\right)\)

\(=-75-325+45+125\)

\(=\left(45+125\right)-\left(75+325\right)\)

\(=170-400\)

\(=-230\)

b) \(62+\left|128\right|-\left|-155\right|-\left|70\right|\)

\(=62+128-155-70\)

\(\Leftrightarrow190-225\)

\(=-35\)

c) \(815+\left[95+\left(-815\right)+\left(-45\right)\right]\)

\(=815+95-815-45\)

\(=\left(815-815\right)+\left(95-45\right)\)

\(=0+50\)

\(=50\)

d) \(5+\left(-7\right)+9+\left(-11\right)+...+25+\left(-27\right)\)

\(=\left(5-7\right)+\left(9-11\right)+...+\left(25-27\right)\)

\(=-2-2-...-2\)

\(=-2.11\)

\(=-22\)

e) \(34+35+36+37-24-25-26-27\)

\(=\left(34-24\right)+\left(35-25\right)+\left(36-26\right)+\left(37-27\right)\)

\(=10+10+10+10\)

\(=40\)

Ths ban

ko bt

\(\dfrac{18}{45}=\dfrac{2}{5}\dfrac{63}{81}=\dfrac{7}{9}\) minh chi co the lam the nay thoi vi minh dang co viec gap

a) 18/45=2/5

b)7/9

c)21/65

d)7/8

a,

=85.35-85.27-35.85+35.27

=85.35+85.(-27)-35.85+35.27

=85[35+(-27)+(-35)]+35.27

=85.(-27)+35.27

=-85.27+35.27

=27.[(-85)+35]

=27.(-50)

=-1350

các câu còn lại cũng vậy

a, 85 x ( 35- 27 ) - 35 x ( 35 - 27 )

85 x 8 - 35 x 8

8 x ( 85 - 35 ) 

8 x 50 = 400

b, ( -45 ) x 69 + 30 x ( -45 ) +( -45)

( -45 ) x ( 69 + 30 + 1)

-45 x 100 = -4500

c , 26 + 7 x ( 4 - 12 )

26 + 7 x ( - 8 )

26 + ( -56 )=(- 30)

d , 127 - 18 x ( 5 + 6 )

127 - 18 x 11

127 - 180 + 18

-53 + 18 = - 35

a.85x(35-27)-35x(85-27)

=85x8-35x58

=680-2030

=(-1350)

b.(-45)x69+30x(-45)+(-45)

=(-3105)+(-1350)+(-45)

=1800+(-45)

=1755

c.26+7x(4-12)

=26+7x(-8)

=26+(-56)

=(-30)

d.127-18x(5+6)

=127-18x11

=127-198

=(-71)

li-ke cho mình nha bạn