adding one step equations
a-3 = 8
11
a - 5 = 4
9
What is the term for a letter that represents an unknown number.
variable.
5a = 25
5
a/7 = 9
-63
x = 20
x - 10
10
a + 8 = 92
84
a - 21 = 49
70
subtraction
25a = 625
25
a/8 = 12
x = 6
2x - 5
7
76 = a + 21
55
300 = a - 180
480
What is the inverse operation of multiplication?
division
486 = 18a
27
15 = a/10
150
x = 7
x3 - 19
324
30 = a -120
150
a - 1,820 = 980
2,800
What operation is performed when a number is next to a variable?
5x
multiplication
108a = 2268
21
13 = a/8
104
x = 12
3/4x + 8
17
23 = a + 9
14
4 = a - 28
32
What is the name of the number next to a variable?
ex. 3x
coefficient
112 = 14a
8
14 = a/12
168
x = 12 and y = 9
3x + 2y
54