Answer:
c
Step-by-step explanation:
cause if you do both it will be the same answer with is also called commutatative
The average of these numbers is nine tenths,
, or .9, however you would like to put it.
x is the variable
<em>In mathematics, a variable is a symbol; in this case, X.</em>
Answer:
27 and 16
Step-by-step explanation:
x + y = 43
x - y = 11
You can add up the two equations so the ys are cancelled out.
2x = 54
x = 27
Plug x in to find y.
27 - y = 11
y = 16
