3 is added to five times a number and the result is multiplied by 4 .The final result is 72 .What is the number.
(5n + 3) * 4 = 72
solve for n
4(3+5×)=72
12+20×=72
20×=72-12
20×=60
×=60/20
×=3
4*5x=20x instead of 15x
y=3
4(3+5x)=72
12+20x=72
20x=72-12
20x =60
20 =20
x=3
20n+ 12= 72
20n= 72 - 12
20/20 = 60/ 20
1= 3
n = 3
15n+12=72
15n=72-12
15n=60
n=60/15
n=4