Vocabulary
Parts of an algebraic expression, separated by + or -
Terms
8a + 15a + a + 9
24a + 9
21b - 11b - 10 - 12b
-2b - 10
-7w - 5 + 17w + 15
10w + 10
Terms that contain the exactly same variable form.
Like terms
5x + 35 + 3x + 2
8x + 37
12c - 6c - (-30)
6c + 30
19a - 6b - 17a - 3b + 9b - 2a
0
A mathematical phrase that contains numbers, operations, and/or variables (but no = sign)
Algebraic expression
32 + 12t + 16t + 8
28t + 40
5z - 55 - 26 - z
4z - 81
-2f - 1f - (-6) + 5f
2f + 6
The numerical part of a term
Coefficient
6p + 32 + 16p + 2 + 4p
26p + 34
-5r + 3q - 8q - r
-6r -5q
A symbol, usually a letter of the alphabet, used to represent a quantity that can change.
Variable
m + 20n + 25m + 6n
26m + 26n
-15j - 18k - 24j - 18k
-39j - 36k
53t - (-20r) + 17 - 10t
43t + 20r +17