Question

How much do you need to subtract from 73/10 to make 7

Answer 1

Subtract 3/10 to make 70/10

I think it is easy enough to simplify from there.

Divide both by 10

7/1 is equal to 7

Answer 2

`(7 3)/(10) - x = 7\Leftrightarrow x = (73)/(10) - 7 = (73)/(10) - (70)/(10) = (3)/(10)`