What is the greatest common factor of 42 and 84

what is the least common multiple of 4 and 10

1.) 42

2.) 20

These are the answers to the questions

The gcf of 42 and 84 is 42. The lcm of 4 and 10 is 20.

Step-by-step explanation:

We will now calculate the prime factors of 42 and 84, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 42 and 84.We found the factors and prime factorization of 42 and 84. The biggest common factor number is the GCF number.

So the greatest common factor 42 and 84 is 42.

The Least Common Multiple (LCM) of the numbers

4, 10

is

20

because 20 is the smallest number that all of the numbers divide into evenly.

a

step-by-step explanation:

the answer is a

it is x=-4

step-by-step explanation: