Miscellaneous
A letter used to represent an unknown number
A variable
2k + 5 = 17
k = 6
3a - 5 = 4
a = 3
m/5 + 4 = 12
m = 40
z/6 - 8 = 2
z = 60
The opposite of addition
subtraction
2a + 11 = 35
a = 12
5m - 7 = 23
m = 6
y/8 + 11 = 13
y = 16
y/9 - 15 = 5
y = 180
The four basic operations
addition, subtraction, multiplication, and division
2r + 39 = 65
r = 13
6k - 5 = 43
k = 8
k/8 + 21 = 97
k = 608
z/6 - 14 = 3
z = 102
Given the problem 2x + 4x = 10, what is the first step in solving this problem?
combine like terms
12s + 27 = 171
s = 12
4j - 71 = 29
j = 25
g/11 + 37 = 128
g = 1188
y/9 - 18 = 52
y = 630
Who is best math teachers ever?
Mr. Nathan
19b + 314 = 1663
b = 71
21q - 39 = 234
q = 13
w/317 + 596 = 1,639
w = 330,631
d/10 - 83 = 64
d = 1470