Miscellaneous
A letter used to represent an unknown number
A variable
k + 5 = 17
k=12
3a - 5 = 4
x=3
m/5 =10
m=50
The opposite of addition
subtraction
x - 11 = -20
x = -9
5m - 7 = -22
x=-3
5y=-10
y=-2
The four basic operations
addition, subtraction, multiplication, and division
2r + 10 = 20
r=15
43=- 5+6x
x=8
18x=9
x=9/18 or 1/2
A number right in front of a variable
a coefficient
-26=-5-y
y=21
4j - 71 = 29
j=25
x/3+4=10
x=18
The best math teachers ever!!!!
Ms. Koe and Ms. Caplan
In words, what would you do to solve:
21q - 39 = 234
First, add 39.
Then, divide by 21.
What is Ms. Caplan's favorite color?
???