105x3
Its 42 (2x21)=42 (7x6)=42 (21x2)=42
The answer is 45. 45 can go into 45 of course and 15x3 also is equal to 45. So the LCM is 45.
0,6x4=15x3
15x3+12x2
7x6 21x2 14x3 10.5x4 8.4x5
67
45
9x5 45x1 15x3
It is: 5x
No, 21 is not prime.
If you mean: 21x2-59x+8 then it is (3x-8)(7x-1) when factored Making use of the quadratic equation formula will help
Use a calculator, it's 69....