The answer is (-3)

Since four times 6 is 24 ,

and the only possible difference with 3 is (-3) that gives 6 [ 3 - (-3) ]

[ = 3+3 ]

[ = 6 ]

so 4 times 6 = 24

Since four times 6 is 24 ,

and the only possible difference with 3 is (-3) that gives 6 [ 3 - (-3) ]

[ = 3+3 ]

[ = 6 ]

so 4 times 6 = 24