Expressions with Addition & Subtraction
4 + a , when a = 7
11
2y , when y = 12
24
12 + c , when c = 58
70
the product of 2 and x
2x
A number, variable, or a combination of these separated by operations
Expression
x - 13 , when x = 20
7
50 / c , when c = 5
10
45 - x + 4 , when x = 13
36
42 + x + y
A letter that represents an unknown number
423 + y , when y = 15
438
12m , when m = 6
72
789 - y , when y = 42
747
43 less than x
x - 43
________ is another word for "solving" an expression.
Evaluate
c - 72 , when c = 110
38
48 / x , when x = 8
6
59a , when a = 7
413
the quotient of 8 and a
8 / a
An expression that contains numbers and variables is called a _____________ expression.
Variable
4 + x - 10 , when x = 20
14
16x , when x = 9
144
272 / x , when x = 8
34
45 plus the product of x and y
45 + xy
An expression (does / does not) have an equals sign.
does not