54

TL

45<?<76-22

=45<?<54

=45<46;47;48;49;50;51;52;53<54

HT

45<x<76-22

45<x<54

\(\Rightarrow x\in\left\{46;47;...;53\right\}\)

HT

22+22+76+54=174

 Bàng 174 nha e

22+22+76+54=174

11 +22 = 33

56 + 76=  132

11 + 22 = 33

56 + 76 = 132

#Học tốt!!!

11+22=33

56+76=132

= 140  bạn nhé

      cho mk nha

          mk cảm ơn

140 bn nhé

140 ban nhe

Tl

45<50<76-22

Hoặc

45<53<76-22

HT

b, c

HT

TL

ý b và c

nha

HT

= [ 50 x ( 76 - 24 + 22)] x 2 

= 50 x 74 x 2

= (50 x 2) x 74

= 100 x 74

= 7400.

7400

7400 vi minh khong the lam loi giai duoc nen xin loi nha( > _ < )

x+22=76

x=76-22

x=54

vậy...

55-x=14

x=55-14

x=41

còn nhớ mk ko?

x+22=76

x=76-22

x=54

55-x=14

x=55-14

x=41

a) X=76-22

    X=54

b) X=55-14

    X=41

\(a,21.\left(-15\right)+67.\left(-15\right)+\left(-15\right)+\left(-15\right).12\)

\(=21.\left(-15\right)+67.\left(-15\right)+\left(-15\right).1+\left(-15\right).12\)

\(=-15.\left(21+67+1+12\right)\)\(=-15.101=-1515\)

\(b,\left(-30\right)+76+30\)\(=\left(-30+30\right)+76=0+76=76\)

\(d,15.\left\{22-\left[400:\left(140+12.5\right)\right]\right\}\)

\(=15.\left\{22-\left[400:\left(140+60\right)\right]\right\}\)

\(=15.\left[22-\left(400:200\right)\right]\)

\(=15.\left(22-2\right)=15.20=600\)

a. (-15) x 101 = -1515 

b. (-30+30) +76 = 76

a) 21.(-15)+67.(-15)+(-15)+(-15).12

= (-15).(21+67+1+12)

= (-15).101

= -1515

b) (-30)+76+30

= [(-30)+30]+76

= 0+76 = 76

c) 15.{22-[400:(140+12.5)]}

= 15.{22-[400:(140+60)]}

= 15.{22-[400:200]}

= 15.{22-2}

= 15.20

= 300