Đáp án là B

x + (-27) = (-100) + 73

x + (-27) = -(100 - 73)

x + (-27) = -27

x = 0

x + 73 = 100

x         = 100 - 73

x         = 27

x+73=100

x=100-73

x=27

-38

29

30

104

19

24

a) 71-(33+x) = 76

71-33-x=76

38-x=76

x = -38

các bài cn lại bn lm tương tự nha!
 

\(C=\left(73-1\right)\cdot\left(73-22\right)...........\left(73-100\right)\)

\(\Rightarrow C=\left(73-1\right)\cdot\left(73-22\right)....\cdot\left(73-73\right).......\left(73-100\right)\)

\(\Rightarrow C=\left(73-1\right)\cdot\left(73-22\right).....0.....\left(73-100\right)\)

\(\Rightarrow C=0\)

C=(73-1).(73-2)...(73-100)

C = (73-1)(73-2).........(73-73)......(73-100)

C = (73-1)(73-2).....0......(73-100)

C = 0

a) 

( x + 9 ) − 25 = 23 x = 39

b) 

140 : ( x − 8 ) = 7 4 : 7 3 x − 8 = 140 : 7 x = 28

c)

100. ( x − 51 ) = 400 x = 55

55 nha bạn

73/49 x 94/51 x 100/146 x 51/25 = 188/49

20000 do ban

nho k cho mk nha

mk nhanh nhat do

= 100*(73+27+82+18)

=100* 200

=20000