Question

[Quân hoàng]

tìm y :

a) y + 2  1/3 = 3

b) y - 1  1/4 = 1  1/8

c) 3 - y = 1  1/4 

d) y × 2  3/5 = 1  13/15

e) 2 ÷ y = 2  3/7

Answer 1

[Edogawa Conan]

a) \(y+2\frac{1}{3}=3\)

=> y + 7/3 = 3

=> y = 3 - 7/3

=> y = 2/3

b) \(y-1\frac{1}{4}=1\frac{1}{8}\)

=> y - 5/4 = 9/8

=> y = 9/8 + 5/4

=> y = 19/8

c) \(3-y=1\frac{1}{4}\)

=> 3 - y = 5/4

=> y =  3  - 5/4

=> y = 7/4

d) \(y\times2\frac{3}{5}=1\frac{13}{15}\)

=> y x 13/5 = 28/15

=> y = 28/15 : 13/5

=> y = 28/39

e) \(2:y=2\frac{3}{7}\)

=> 3 : y = 17/7

=> y = 3 : 17/7

=> y = 21/17

Answer 2

[I don't need you]

a) y + 2/1/3 = 3

y + 7/3 = 3

y = 2/3

cac bai con lai bn tu dua vao cong thuc da hoc mak lm nha!