In an expression what is a letter or a number by its self
e.g. 4f, f, 6
A term
8a + 15a + a + 9
24a + 9
21b - 6b
15b
-7w - 5 + 17w + 15
10w + 10
x + 7 = 21
What is x?
14
What are terms that contain the same letter or do not have a letter at all?
e.g., -f, 6f
Like term
5x + 35 + 4x + 7
9x + 42
12c - 6c - 30
6c - 30
19a - 6b - 17a - 3b + 9b - 2a
0
3x + 3x = 18
What is x?
3
What is a mathematical phrase that contains numbers, operations and/or variables but has not = sign
e.g., 5x + 2x + 2f
An expression
32 + 12t + 16t + 8
28t + 40
5z - 55 - 26 - z
4z - 81
-2f - 1f + 6 + 5f
2f + 6
-3x + 4 = 16
What is x?
What is it called when we collect, add and subtract terms and like terms
Simplify
75f + f + f + f2
77f + f2
-7d - 40 + 8d
d - 40
5r + 3q - 8q + r
6r - 5q
-5x + -6x = -22
What is x?
2
A symbol that is usually a letter of the alphabet, that is used to represent a quantity that can change
A variable
m2 + 9m2 + m + 10m
10m2 + 11m
-15j - 18k - 20j - 18k
-35j - 36k
53t + 20r + 17 - 10t
20r + 43t + 17
-x2 + y2 = 34
What are x and y?
x = 5
y = 3