I have no idea what the heck 51 equals! Don't go online and ask what the heck this means! Use your own recorces! Good luck and work on something else!
Suppose the number is N. Then 2N - 4 = 47 2N = 51 N = 25.5
47+51 = 98
50 +1. 25+26,10+41,48+3, etc
First you must move the 4 to the other side of the equal sign. 5x-4=47 +4 +4 5x=51 Then you must divide by 5 to get x alone. 5x=51 5 5 x=51/5
47, yes. 51, no.
47 is a prime number and is divisible by 1 and 47 only. 51 is divisible by 1, 3, 17, 51.
The LCM is 38352.
5x - 4 = 47 Add '4' to both sides 5x - 4 + 4 = 47 + 4 5x = 51 Divide both sides by '5' 5x/5 = 51/5 x = 51/5 = 10 1/5 = 10.2
51 = 3x17
51 is composite.
51
-4