Question

for all the numbers, x#y=xy+y. if 3#2=7#k, then k=?

Answer 1

x#y= xy+y , therefore
3#2=3*2 +2 = 8
7#k=7*k+k = 8k
since they are equal :
8=8k , k=1 :)

Answer 2

Got it ? :)

Answer 3

thank u so much.... i got it :D