Miscellaneous
A letter used to represent an unknown number
a variable
2k + 5 = 17
6
3a - 5 = 4
3
m/5 + 4 = 12
40
z/6 - 8 = 2
60
The opposite of addition
subtraction
2a + 11 = 35
12
5m - 7 = 23
6
y/8 + 11 = 13
16
y/9 - 15 = 5
180
The four basic operations
addition, subtraction, multiplication, and division
2r + 39 = 65
13
6k - 5 = 43
8
k/8 + 21 = 97
608
z/6 - 14 = 3
102
A number that doesn't change
a constant
12s + 27 = 171
12
4j - 71 = 29
25
g/11 + 37 = 128
1188
y/9 - 18 = 52
630
The opposite of exponent
root
19b + 314 = 1663
71
21q - 39 = 234
13
w/317 + 596 = 1,639
330,631
d/10 - 83 = 64
1470