Bag contains 50 marbles,10 of which are blue ,8 are red,20 are green ,and 12 are purple . marcie takes a ow marble out of the bag ,records the color and returns it to the bag how many red marbles should she expect after 500 trials

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.