Question

7 3/4-3 1/8 please help

Answer 1

7  3/4 - 3  1/8
=31/4  -25/8
=(62 - 25)/8   [LCM of the denominator is 8]
=37/8
Therefore 7  3/4  -  3  1/8  =37/8
 = 4  5/8

Answer 2

7 3/4-3 1/8=?
(7*4+3/4)-(3*8+1)=?
31/4- 25/8=?
LCM of 4,8= 8
((31/4)*(2/2))- 25/8=
62/8- 25/8= 37/8 or 4 5/8