a) 9700

b) 30

c) 40

d) 79

dài vậy ngại làm lắm t chỉ làm câu a , b thôi nha

a) 37.24+37.76+63.79+21.63
= 37(24+76)+63(79+21)
= 37.100+63.100
= (37+63)100
= 100.100
= 10000
b) 101+(-60)+29+(-40)
= (101+29)+(-60-40)
= 130-100
= 30
c) 40+(139-172+99)-(139+199-127)
= 40+139-172+99-139-199+127
= (139-139)+(-127+127)+(99-199)+40
= 0+0-100+40
= -60
d) (158.129-158.39):180
= [158(129-39)]:180
= (150.90):180
= 75
= 

Sửa đề

a) 37.24 + 37.76 + 63.79 + 21.63

= 37.(24 + 76) + 63.(79 + 21)

= 37.100 + 63.100

= 100.(37 + 63)

= 100.100

= 10000

b) 49 + (139 - 172 + 99) - (139 + 199 - 172)

= 49 + 139 - 172 + 99 - 139 - 199 + 172

= 49 + (139 - 139) + (172 - 172) + (99 - 199)

= 49 + 0 + 0 - 100

= -51

\(g,101+\left(-60\right)+29+\left(-40\right)=41+29+\left(-40\right)=70+\left(-40\right)=30\)

\(h,167+\left(-252\right)+52+\left(-67\right)=\left(-85\right)+52+\left(-67\right)=\left(-33\right)+\left(-67\right)=-100\)

\(i,38-138+250-350=\left(-100\right)+250-350=150-350=-200\)

\(k,118+107-\left(118-93\right)-50=225-25-50=100-50=50\)

\(m,40+\left(139-172+99\right)-\left(139+199-172\right)=40+\left[\left(-33\right)+99\right]-\left(338-172\right)\)

\(=40+66-166=106-166=-60\)

40

câu này mk lm r mà:v?

40 + ( 139 – 172 + 99 ) – ( 139 + 199 – 127 )

=40+139-172+99-139-199+127

=(139-139)+(99-199)+(127-172+40)

=0-100+(-45+40)

=-100-5

=-105

40 + ( 139 - 172 + 99 ) - ( 139 + 199 - 127 )

= 40 + 139 + 172 + 99 - 139 - 199 +127

= ( 139 - 139 ) +  ( 99 - 199 ) + ( 127 - 172 + 40 )

= 0 -100 - 5

= -105

40+(139-172+99)-(139+199-127)

=40+139-172+99-139-199-127

ĐOẠN NÀY ĐẦU MÌNH CHỊU

XIN LỖI MONG ĐỪNG TRÁCH

\(=40+139-172+99-139-199+127\)

\(=(139-139)+(99-199)+(127-172+40)\)

\(=0-100+(-45+40)\)

\(=-100-5\)

\(=-105\)

\(40+\left(139-172+99\right)-\left(139+199-127\right)\\ =40+66-211\\ =106-211=-105\)

40 + ( 139 - 172 + 99 ) - (139 +199 -127 )
=40+66-211
=106-211
=-105

-60

-60

= 40 + 139 - 172 + 99 -139 - 199 +172

= 40 + (139 -139) + (172 - 172) +( -199+99)

= 40 + 0 + 0 + (-100)

= -60