Get the answers you need at Westonci.ca, where our expert community is dedicated to providing you with accurate information. Join our Q&A platform to connect with experts dedicated to providing precise answers to your questions in different areas. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.
Sagot :
Answer:
x = - 3 , y = - 1
Step-by-step explanation:
given the system of equations
- 7x - 7y = 28 → (1)
2x - 7y = 1 → (2)
multiplying (1) by - 1 and adding the result to (2) will eliminate y
7x + 7y = - 28 → (3)
add (2) and (3) term by term to eliminate y
(2x + 7x ) + (- 7y + 7y ) = 1 - 28
9x + 0 = - 27
9x = - 27 ( divide both sides by 9 )
x = - 3
substitute x = - 3 into either of the 2 original equations and solve for y
substituting into (2)
2(- 3) - 7y = 1
- 6 - 7y = 1 ( add 6 to both sides )
- 7y = 7 ( divide both sides by - 7 )
y = - 1
The solution is x = - 3 , y = - 1
We hope this information was helpful. Feel free to return anytime for more answers to your questions and concerns. Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. Thank you for using Westonci.ca. Come back for more in-depth answers to all your queries.
