Expression are those that does not contain equal signs.
Expressions:
(3 x 13 ) - 21
5(a + 9)
36(6 x 4)
6a + 6b + 9
Equations:
29 - 12 = 17
3(c + 5) = 27
c - 15 = 44
5(x + 5) = 65
48 - 4m = 32
