Question

2/3:(4/9X-4/9)+1/20=4/5

Answer 1

2/3:(4/9X-4/9)+1/20=4/5

2/3:(4/9X-4/9)=3/4

2/3*4/3=(4/9X-4/9)

8/9=4/9*(х-1)

х-1=2

х=3