Im going to assume this problem is (18!)/((4!)(18-4)!)
=(18!)/((4!)(14)!)
=(18!)/((4!)(14!))
=(18*17*16*15*14!)/((4!)(14!)) by definition of factorial
=(18*17*16*15)/((4!))
=(18*17*16*15)/((4*3*2*1))
=(9*17*4*5)/1
=9*17*4*5
=20*9*17
=3060
Check your exponent rules!
((29999999 - 29999998 )/29999997)
=(29999999 /29999997)- (29999998 /29999997)
=(22)-(21)
=4-2
=2
Hardly impossible.
Start by distributing the 3 into the -2 so you will have
5x+3(-2)=-16
5x-6=-16
then add 6 to either side.
5x=-10
divide by 5 to solve for x!
x=-2
