Question

x+y=6,x-y=4 then find the value of 3xy

Answer 1

Value of 3xy is 15.
Where x is 5 and y is 1

Answer 2

first we find value of x and y

x+y=6.......(1)
x-y=4........(2)

now we take sum of equation {1) & (2)

2x=10

x=5 and y=1

3xy=3(5)(1)=15
your answer is 15