Question

the difference between a number and 5/8 of it is 10 1/2. Fine the number

Answer 1

Let the number be x
x-5/8 = 21/2
8x-5/8 = 21/2
8x-5 = 21×8/2
8x = 84+5
x = 89/8
The number is 89/8

Answer 2

here is your answer mate