Answer with Step-by-step explanation:
1.Let x=
..(1)
Multiply by 10 on both side then we get
...(2)
Subtract equation(1) from equation (2)



2.Let

..(1)
Multiply by 100 on both sides then we get
..(2)
Subtract equation (1) from equation(2)



3.Let

. ..(1)
Multiply by 10 on both sides
...(2)
Subtract equation (1) from equation(2)



