Question 756477
.By what should the sum of 2/3 and -3/4 be divided to get 5/4 
.
Let x = number 
then
(2/3 - 3/4)/x = 5/4
cross multiplying we get:
5x = 4(2/3 - 3/4)
5x = 8/3 - 3
multiplying both sides by 3:
15x = 8 - 9
15x = -1
x = -1/15