Page 91 - Math Course 1 (Book 1)
P. 91
Solving Equations
1 Solve by Using Multiplication
1 • d = 10 Write the equation.
2 -5
a = - 10
Solve . Check your solution.
8
3 1 1
1
2 • d = 10 Rename as an improper A. -16 C. 6
2
fraction. 4
3
3 • d = 10 2 Multiply each side by 2 B. -9 8 D. 16
2 3 3
20
d = = 6.67 Simplify.
3
Answer
The box of cereal will last
Answer 2
approximately days.
6
3
COFFEE
Your Turn! Each morning Michael buys a
cappuccino for $4.50 and each
Solve by Using Addition and Subtraction afternoon he buys a regular coffee for $1.25. If he
put aside $30 to buy coffee drinks, how many days
Solve 4.2 = x – 9.5 will the money last?
A. 3 days
A.–5.3
B. 5 days
B. 1.37
C. 6 days
C. 5.3
D. 9 days
D. 13.7
Answer Answer
2 1
Solve = x -
3 2
A. 1 C. 1 1
6 6
3 2
B. D. 1
5 5
Answer
Solve by Using Division
Solve –6m = –4.8. Check your solution.
A. –0.8
B. 0.8
C. 1.2
D. 28.8
Answer
83
