Question

Помогите решить уравнение по математике

Answer 1

1/4:(3/4х-1/2)+2/5=1/2
1/4:(3/4х-1/2)=1/2-2/5
1/4:(3/4х-1/2)=5/10-4/10
1/4:(3/4х-1/2)=1/10
3/4х-1/2=1/4:1/10
3/4х-1/2=10/4
3/4х=2 1/2+1/2
3/4х=3
х=3:3/4
х=4