kết quả =-1220

phá ngoặc ta có 

57 - 725 - 605 + 53

= -668 - 605 + 53

= -1273 + 53

=-1220

(57 - 725) - (605 - 53)

= -668 - 552

=-1220

(57-725)-(605-530

=  -668 - 552

=-1220

nhớ tick nha!

(57-725)-(605-53)=

(-668)-552=

-1220

tick to nha ban nhe, tick to nha ban nhe, minh dung 1000% luon, tick to di

-72×17+31-36×228

57-725-605+53=-1220

55+45+15-15+55-45=110

Ủng hộ mk nhaaa

Câu 1:

= 57 - 725 - 605 - 53

=  ( 725 - 605 ) - ( 57 - 53 )

= 120 - 4

= 116

Câu 2 làm tương tự

sơ ry mk mới học lớp 5

a) -72.17+72.31 - 36 . 228

 = -72.17 + 72. 31 - 36.2.114

 = -72 .17 + 72 . 31 -72 . 114

 = -72. ( 17-31+114)

 = -72 . 100

 = -7200

b) ..........

 = -7 . ( 16-36.9) -(-125) 

 = -7 . ( 16-324) +125

 =-7 . ( -308) +125

 = 2156+125

 = 2281

$a)$

$-72.17+72.31-36.228$

$=-72.17+72.31-36.2.114$

$=-72.17+72.31-72.114$

$=72(31-17-114)$

$=72.(-100)=-7200$

$b)$$-7.[{(-2)}^4+(-36):(-3^2)]-{(-5)}^3$

$=-7.[16-36:(-9)]+125$

$=-7.[16--4]+125$

$=-7.20+125$

$=-140+125$

$=-15$

$c)$$(57-725)-(605-53)$

$=57-725-605+53$

$=(57+53)-120$

$=110-120=-10$

$a)$

$-72.17+72.31-36.228$

$=-72.17+72.31-36.2.114$

$=-72.17+72.31-72.114$

$=72(31-17-114)$

$=72.(-100)=-7200$

1) -1

2) -1326

3) 90

a,=27

b,=-9

c,-1220

a) (38-42+14)-(25-27-15)

= 38 - 42 + 14 - 25 + 27+ 15

= -4 + -11+42

= -15+42= 27

b)-(21-32)-(-12+32)

= -21 + 32 - (-12)+32

= 11- ( -12+32)

= 11- 20 =-9

c) (57-725)-(605-53)

= 57-725-605+53

= -668 -605+ 53

=-1273 + 53

= -1220

\(1,=38-42+14-25+27+15=27\)

\(2,=12+21-23+21-10=21\)

\(3,=57-725-605+53=-1220\)

\(4,=55+45+15-15+55-45=110\)

\(\text{1.(38-42+14)-(25-27-15)}\\ =38-42+14-25+27+15\\ =-4-11+42\\ =27\)

\(\text{2.(12+21)-(23-21+10)}\\ =12+21-23+21-10\\ =33+44-10=67\)

a) -(12+21-23)-(23-21+10)

 =-12-21+23-23+21-12=-12-12=-24

b)(57-725)-(605-53)

 =57-725-605+53=-1220

c)(55+45+45)-(15-55+45)

 =55+45+45-15+55-45=110+45-15=140

-(12+21-23)-(23-21+10)

=-12-21+23-23+21-10

=(21-21)+(23-23)-(12+10)

=0+0-22=-22

(57-725)-(605-53)

=57-725-605+53

=(57+53)-(725+605)

=110-1330

=-1220 

(55+45+45)- (15-55+45)

=55+45+45-15+55-45

=(45+55)+(55-15)+(45-45)

=100+40+0=140

-(12+21-23) - (23-21+10) = -12 - 21 + 23 - 23 + 21 - 10 = (-12-10) + (21-21) + (23-23) = -22 + 0 + 0 = -22

(57 - 725) - (605 - 53) = 57 - 725 - 605 + 53 = (57 + 53) - (725 + 605) = 110 - 1330 = 1220

(55 + 45 + 45) - (15 - 55 + 45) = 55 + 45 + 45 - 15 + 55 - 45 = (55 + 55) + (45 - 45) + (45 - 15)

= 110 + 0 + 30 = 140

a) (-13) + (-750) + (-17) + 750

= -763 + (-17) + 750

= -780 + 750

= -30

b) (55 + 45 + 15) - (15 - 55 + 45)

= 115 - 5

= 110

c) (-7) + (-20) + 35 + (-8)

= -27 + 35 + (-8)

= 8 + (-8)

= 0

d) (57 - 725) - (605 - 53)

= -668 - 552

= -1220

Hok tốt, mik nha

k mik nha

a.[(-750)+750]+[(-17)+(-13)]

=        0           +   (-20)

= -20

b.55+45+15+15+55+45

=(55+55)+(45+45)+(15+15)

=  110    +   90      +    30

=            200          +   30

=       230

c.[(-7)+(-8)]+(-20)+35

=    (-15)     + (-20) + 35

=         (-35)            +  35

=   0

d.(725 - 605) - (57-53)

=  120          -    4

=116