Question

Tìm x :
a, x + 2/5 = 1/2 
b,3 4/5 + x = 15/8 
c, x - 4 5/6 = 2 1/6 + 5/6
d,14/5 -x = 1 1/5 - 3/5

Answer 1

 

a, x + 2/5 = 1/2 

x = 1/2 + 2/5

x = 9/10 b,34/5 + x = 15/8 

x = 34/5 - 15/8

x =197/40 c, x - 45/6 = 21/6 + 5/6

x  - 45/6 = 26/6

x = 26/6 + 45/6

x =71/6 d,14/5 - x = 11/5 - 3/5

14/5 - x = 8/5

x = 14,5 - 8/5

x =6/5

Answer 2

a, x + 2/5 = 1/2 

x = 1/2 + 2/5

x = 9/10

b,34/5 + x = 15/8 

x = 34/5 - 15/8

x =197/40

c, x - 45/6 = 21/6 + 5/6

x  - 45/6 = 26/6

x = 26/6 + 45/6

x =71/6

d,14/5 - x = 11/5 - 3/5

14/5 - x = 8/5

x = 14,5 - 8/5

x =6/5

- Làm lại.