Please look at screenshot and solve for question 1.

3xy^3z

Step-by-step explanation:

3 is the GCF between 3 and 21

Lowest number of x's is 1

Lowest number of y's is 3

Lowest number of z's is 1

15 batches are the most you can make

step-by-step explanation:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.