Question

Решите уравнения помогите пожалуйста)

Answer 1

(1/4+3/4х):0,45=25/36
(1/4+3/4х):45/100=25/36
1/4+3/4х=25/36*45/100
1/4+3/4х=5/16
3/4х=5/16-1/4
3/4х=5/16-4/16
3/4х=1/16
х=1/16:3/4
х=1/16*4/3
х=1/12