Download 6-3 hw answers - Ottawa Hills Local Schools

6-3 Elimination Using Addition and Subtraction
Use elimination to solve each system of equations.
7. −v + w = 7
v+w=1
ANSWER: (−3, 4)
9. −4x + 5y = 17
4x + 6y = −6
ANSWER: (−3, 1)
11. a + 4b = −4
a + 10b = −16
ANSWER: (4, −2)
13. 6c − 9d = 111
5c − 9d = 103
ANSWER: (8, −7)
15. 9x + 6y = 78
3x − 6y = −30
ANSWER: (4, 7)
17. −3x − 8y = −24
3x − 5y = 4.5
ANSWER: (4, 1.5)
19. The sum of two numbers is 22, and their difference is 12. What are the numbers?
ANSWER: 5, 17
21. Three times a number minus another number is −3. The sum of the numbers is 11. Find the numbers.
ANSWER: 2, 9
23. TOURS The Blackwells and Joneses are going to Hershey’s Really Big 3D Show in Pennsylvania. Find the adult
price and the children’s price of the show.
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ANSWER: Page 1
21. Three times a number minus another number is −3. The sum of the numbers is 11. Find the numbers.
ANSWER: Using Addition and Subtraction
6-3 Elimination
2, 9
23. TOURS The Blackwells and Joneses are going to Hershey’s Really Big 3D Show in Pennsylvania. Find the adult
price and the children’s price of the show.
ANSWER: Adult, $5.95; children, $3.95
Use elimination to solve each system of equations.
25. 3x − 5y = 11
5(x + y) = 5
ANSWER: (2, −1)
27. 6x − 7y = −26
6x + 5y = 10
ANSWER: 29. ANSWER: eSolutions Manual - Powered by Cognero
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