Try using a calculator! 20 x 4 = 80. It could not be simpler!
n * 4 = 80 Divide both sides by 4: n = 20
20.
20
4 x 20 = 80
20 x 1/5 = 4
There is only one number that equals 20, and that is 20.
First write the equation for this which is (n / 4 ) - 5 = 15. The number is 80. 80 divided by 4 equals 20 and 20 minus 5 equals 15.
Divid your number by 4 then times that number by 3 eg. 20 divide 4 equals 5 5 times 3 equals 15
80 divided by 4 equals 20.
20
4*5 = 20
4