0.4286
2 1/3
2.3333333333333333333333
0.4285
4.4286
9.4286
6
42 divided by 18= 2 and1/3
1.75
2.3333
42.3333
1, 2, 3 and 6
18
7
it's the LCM of 18 and 42 18 = 2x32 42 = 2x3x7 LCM = 2x32x7 = 126
To work it out for yourself, you need to understand that a prime number is a number than can only be divided by 1 and itself. 18 can be divided by 2 39 can be divided by 3 42 can be divided by 2 which leaves 31 which can only be divided by 1 and 31.