7,10,3 how do I find the least common multiple​

Step-by-step explanation:

Usually you do it by factoring into primes. But this choice of numbers has no common primes, so all three make up the LCM

7 * 10 * 3

210 = LCM

LCM of 4 10 and 12

4: 2 * 2

10: 2 * 5

12: 2*2*3

LCM: 2 * 2 * 3 * 5 = 60

If you don't find the LCM then the answer would be 480

210

Step-by-step explanation:

When finding the LCM(least common multiple) you need to factor each number into the product of prime number also called finding the prime factorization. Both 7 and 3 are prime, so they do not need to be factored further. However, 10 can be factored into 5 x 2.

3 - 3

7 - 7

10 - 5 x 2

By looking at the factors above, you notice none of them are the same, so none of the numbers share factors. This means you can just multiply all the factors to get the LCM:

3 x 7 x 5 x 2

210

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)