4. 2a – 4 = 16
Add the number +4 to -4 and 16..
+4 +4
-4 + +4 = 0 so cross out the whole number. A=_____________
16 + 4 = 20 so now look
at the problem. 2a = 20
The a still needs to be alone so keep A=----------
going. Now, you know that 2a = 2.a. Do
the same. What is the inverse of A= 10!!!!!!!!!!!!
multiply? It is divide! 2 divided by 2 =
one so cross out the 2.
Then, you know, If your baby
sister gets ice cream you get ice
cream.” Divide 20 by 2 to get
10!