a) 68 + 11 x 205 .... 68 x 11 + 205

=       2323 > 953

Vậy 68 + 11 x 205 > 68 x 11 + 205

b) 89 x 11 + 715 .... 89 + 11 x 715

=     1694  < 7954

Vậy 89 x 11 + 715 < 89 + 11 x 715

a) 68+11*205>68*11+205

b)89*11+715<89+11*715

a)68 + 11 x 205>68 x 11 + 205

b)89x11+715<89+11x715

a)68+11x205>68x11+205

b)89x11+715=89+11x715

học giỏi nha bn!

a,Vì:68 + 11 x 205 = 2323

        68 x 11 + 205 = 953

    Nên 68 + 11 x 205 >  68 x 11 + 205 

b,Vì 89 x 11 + 715 =1154

        89 + 11 x 715 = 7954

Nên 89 x 11 + 715 < 89 + 11 x 715

Học tốt nha bạn !!

123*54=2952

234+68=312

356-36=320

56:8=7

123x24=2952

234+68=302

356-36=320

56:8=7

tk nha!

123x 24 = 2962

234 + 68 = 302

356 - 36 = 320

56 : 8 = 7

hok tốt

68+11x205>68x11+205

Câu 1 là dấu > 

câu 2 là dấu <

\(30.\left(-89\right)-68.\left(-30\right)+129.\left(-30\right)\)

\(=\left(-30\right).89-68.\left(-30\right)+129.\left(-30\right)\)

\(=\left(-30\right)\left(89-68+129\right)\)

\(=\left(-30\right).150\)

\(=-4500\)

a) \(\left(-17\right)\cdot32+17\cdot\left(-68\right)-17\)

\(=17\cdot\left(-32-68-1\right)\)

\(=17\cdot\left(-101\right)\)

\(=17\cdot\left(-100-1\right)\)

\(=-1700-17\)

\(=-1717\)

b) \(25\cdot\left(34-89\right)+25\cdot89\)

\(=25\cdot\left(34-89+89\right)\)

\(=25\cdot34\)

\(=850\)

c) \(-145\cdot\left(13-57\right)+57\cdot\left(10-145\right)\)

\(=-145\cdot13+145\cdot57+57\cdot10-145\cdot57\)

\(=-145\cdot\left(13+57\right)+57\cdot\left(145+10\right)\)

\(=-145\cdot70+57\cdot155\)

\(=-10150+8835\)

\(=-1315\)

`@` `\text {Ans}`

`\downarrow`

`a)`

\((- 17) . 32 + 17 . (- 68) – 17 \)

`= (-17). (32 + 68 + 1) `

`= (-17). 101`

`= -1717`

`b)`

\(25 . (34 – 89) + 25 . 89\)

`= 25. (34 - 89 + 89)`

`= 25. 34`

`= 850`

`c)`

\(– 145. (13 – 57) + 57. (10 – 145)\)

`= (-145). 13 - (-145). 57 + 57.10 + 57. (-145)`

`= (-145). (13 - 57 + 57) + 57.10`

`= (-145). 13 + 570`

`= -1885 + 570 = -1315`

mn giúp mình v

34/7; 89/26; 46/15

thấy sai sai :')

68 : 14 = 4 ( dư 12 )

89 : 26 = 3 ( dư 11 )

92 : 30 = 3 ( dư 2 )