Answered

Explore Westonci.ca, the top Q&A platform where your questions are answered by professionals and enthusiasts alike. Get immediate and reliable solutions to your questions from a community of experienced experts on our Q&A platform. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

what is y=-6x=7
y=8x-21 in solving system by substitution method?

Sagot :

SchwarzschildRadius
So,

Notice that y is equal to two different equations.

Since we know that, we can simply put the right sides of both equations side-by-side.

-6x + 7 = 8x - 21

Add 6x to both sides
7 = 14x - 21

Add 21 to both sides
28 = 14x

Divide both sides by 14
2 = x

Substitute in the second equation
y = 8(2) - 21

Distribute
y = 16 - 21

Collect Like Terms
y = -5

Check
-5 = -6(2) + 7
-5 = -12 + 7
-5 = -5 This checks.

Check in second equation
-5 = 8(2) - 21
-5 = 16 - 21
-5 = -5 This also checks.

S = {(2,-5)}
Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Thank you for trusting Westonci.ca. Don't forget to revisit us for more accurate and insightful answers.