Variables
Substitution
Solve for the Variable
multiplying fractions
100
What is a variable?
letter that replaces a number
100
2 + w for w = 6
8
100
5 + m = 7
m = 2
100

1/4 x 3 =

3/4

200
What does substitute mean?
Take the place of
200
12 - m for m = 3
9
200
m + 4 = 12
m = 8
200

2/3 X 4  

8/3

300
Fill in the blank. When we solve for variables, we use the _______ operation.
opposite
300
6 * r for r = 10
60
300
34 + q = 40
q = 6
300

1/10 X 2 =

2/10

400

What is the variable in the equation c + 2 = 4

c

400
p / 5 for p = 35
7
400
100 + y = 200
y = 100
400

Turn the mixed number into an improper fraction 5 1/4

21/4

500

What is the variable in the equation 4 x d = 12

d

500
2 + g - 4 for g = 12
10
500
b + 88 = 100
b = 12
500

Turn the mixed number into an improper fraction 6 2/5

32/5

M
e
n
u