Answer:
a = 4
Step-by-step explanation:
a + 2 = 6
Subtract 2 from both sides
a + 2 - 2 = 6 - 2
a = 4
Step 1: write the number as a product, helps visualizing common factors.

I've marked things being repeating, so, group them up

Now you have a common factor again

Extra, if you want to split the first one, you can see it as the difference of

and

which is further split into
Answer:
Look at the image.
Step-by-step explanation:
Answer:
Expanded Notation Form:
20,000
+ 3,000
+ 900
+ 50
+ 8
Step-by-step explanation: