If they have no common factors other than 1, the LCM is their product.
lcm(a,b,c,d) = lcm(lcm(a,b,c),d) = lcm(lcm(a,b),lcm(c,d))
If C is co-prime with 6 and with 7, then LCM(6, 7, C) = 42*C If not, the answer depends on the value of C.
That would depend on the value of C.
The C stands for Common.
That depends on the values of A, B and C.
LCM(8, C, A) = 8*C*A.
The LCM of 2, 3 and 5 is 30. The LCM of any three relatively prime numbers a, b and c is a*b*c, and here, 2 is a, 3 is b and 5 is c. Since 2, 3 and 5 are relatively prime, the LCM is 2*3*5=30.
The LCM of a^2b and b^2c is a^2b^2c
200a2bc
It depends on the values of B and C but without that knowledge, it is 7*B*C.
The Least Common Multiple (LCM) of 25, 45, and 15 is 225.225
1008