Question

[Vũ Lê Minh Thư]

Tìm x biết:

a) ( x - 1/2) x 5/3 = 7/4 - 1/2

b) ( x - 4/3) x 7/4 = 5 - 7/6

Answer 1

[Nicky Grimmie]

(x-1/2).5/3=7/4-1/2

(x-1/2).5/3=5/4

x-1/2=5/4:5/3

x=3/4+1/2

x=5/4

(x-4/3).7/4=5-7/6

(x+4/3).7/4=23/6

x+4/3=23/6:7/4

x+4/3=46/21

x=46/21-4/3

x=6/7