Westonci.ca offers fast, accurate answers to your questions. Join our community and get the insights you need now. Discover solutions to your questions from experienced professionals across multiple fields on our comprehensive Q&A platform. Experience the convenience of finding accurate answers to your questions from knowledgeable experts on our platform.
Sagot :
Answer:
x = - 7, y = 6
Step-by-step explanation:
7x + 7y = - 7 -----> equation 1
- 10x - 7y = 28 -----> equation 2
Add equations 1 & 2,
7x + 7y = - 7
- 10x - 7y = 28
___________
- 3x + 0 = 21
- 3x = 21
x = 21 / - 3
x = - 7
Substitute x = - 7 in equation 1,
7x + 7y = - 7
7y + 7x = - 7
7y + 7 ( - 7 ) = - 7
7y - 49 = - 7
7y = - 7 + 49
7y = 42
y = 42 / 7
y = 6
Answer:
x = -7
y = 6
Step-by-step explanation:
7x + 7y = -7 ------------------(I)
-10x - 7y = 28 ----------------(II)
Add both the equation and so y will be eliminated and we can find the value of x
(I) 7x + 7y = -7
(II) -10x - 7y = 28 {Now add}
-3x = 21 {Divide both sides by (-3)}
x = 21/-3
x = -7
Plugin x = -7 in equation (I)
7*(-7) + 7y = -7
-49 + 7y = -7
7y = -7 + 49
7y = 42
y = 42/7
y = 6
Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. We're here to help at Westonci.ca. Keep visiting for the best answers to your questions.