1. X- 23.89= 0.3 X+ 3.82=6.1 2. 7/9+9/10 3 + 2/5 3/5 - 3/8 4 - 5/7 3/5 + 1/2 - 3/10 1- ( 2/5 + 1/3) 2. tìm x X+ 1/4 = 5/8 X- 3/5 = 1/10 7/8 - X = 1/4 b. x : 3/2= 1/4 X x 2/7= 6/11 4/5 : X = 2/3

Các câu hỏi liên quan