a: \(=41.54+8.46-3.18-5.82+23.17-3.17\)

=50-9+20

=70-9=61

b: \(=123.8-34.15-5.85-12.49+2.49+10\)

=123,8-40

=83,8

c: \(=32.18+36.42+13.93-2.18-6.42-3.93\)

=30+30+10

=70

a: \(A=\left(41.54+8.46\right)-\left(3.18+5.82\right)+\left(23.17-3.17\right)\)

=50-9+20

=70-9

=61

b: \(B=123.8-\left(34.15+5.84\right)+\left(-12.49+2.49\right)\)

\(=123.8-40-10=73.8\)

c: \(C=\left(32.18-2.18\right)+\left(36.42-6.42\right)+\left(13.93-3.93\right)\)

=30+30+10

=70

a: 

=50-9+20

=70-9

=61

b: 

c: 

=30+30+10

=70

a: 
A
=
(
41.54
+
8.46
)
−
(
3.18
+
5.82
)
+
(
23.17
−
3.17
)

=50-9+20

=70-9

=61

b: 
B
=
123.8
−
(
34.15
+
5.84
)
+
(
−
12.49
+
2.49
)

=
123.8
−
40
−
10
=
73.8
 

c: 
C
=
(
32.18
−
2.18
)
+
(
36.42
−
6.42
)
+
(
13.93
−
3.93
)

=30+30+10

=70

123,8 - 34,15 - 12,49 - ( 5,85 - 2,49 ) + 10,2

=123,8 - 34,15 - 12,49 -  5,85 + 2,49  + 10,2

=(123,8+10,2)-(34,15+5,85)-(12,49-2,49)

=134-40-10

=84

84

=84

B = 123,8 - 34,15 - 12,49 - (5,85 - 2,49) + 10,2

B= 123,8 - 34,15 -12,49 - 3,36 + 10,2

B= 84

giúp mình nhanh với

mik chịu gg surch đi

123.8-34.15=89.65

123.8-34.15=89.65

a: =-2,4x1,25=-3

b: =-5,85:2,25=-2,6

c: =4,2-0,126-2,18=1,894

d: =-45,3+7,3-1,5=-38-1,5=-39,5

a) \(\left(-2,4\right)\cdot1,25=-\left(2,4\cdot1,25\right)=-3\)
b) \(-5,85:2,25=\)\(-\left(5,85:2,25\right)=-2,6\)
c) \(4,2-\left(0,126+2,18\right)=4,2-2,306=1,894\)
d) \(-45,3+\left[7,3+\left(-1,5\right)\right]=-45,3+5,8=-39,5\)

giải hộ mik với

 a; 36,42 x 7,3 + 36,42 - 2,7

= 36,42 x (7,3 + 1) - 2,7

= 36,42 x 8,3  - 2,7

= 302,286 - 2,7

= 299,586

b; 681,45 x 96,48 - 86,48 x 681,45

= 681,45 x (96,48 - 86,48)

= 681,45 x 10

= 6814,5