Sign In
Ask Question
Selina Molina
Mathematics
4 February, 08:12
2x - y = - 1
5x + 4y = 17
+5
Answers (
1
)
Elena Zuniga
4 February, 08:36
0
You will need to use simultaneous equations.
Method:
Get both equations to have the same subject, in this case we will multiply the first equation by 4
1) 2x-y = - 1
Becomes
1) 8x-4y = - 4
Then make both equations equal to 4y.
1) 8x+4 = 4y
2) 4y = - 5x + 17
Because they both equal 4y, that means they are equal to each other.
8x+4 = - 5x+17
Now solve for x.
13x = 13
x = 1
Now that we have x, we can substitute it back into either equation to get y. I will use equation 1 because it is less complex.
2x-y = - 1
2 (1) - y = - 1
y = 3
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“2x - y = - 1 5x + 4y = 17 ...”
in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
Which of the following are roots of the polynomial function F (x) = x^3 - 5x^2 - 13x - 7 A. 7 B. 3 + Square root of 2 C. 1 + square root of 3 D. - 1 E. 1 - square root of 3 F. 3 - square root of 2
Answers (2)
2.3 to the nearest cent
Answers (1)
1/3x (-6+27y-51z) simplify
Answers (2)
4. On a beach trip, Lucy rents a bike from "Wheels by the Waves", where they rent bikes for $12 plus $3 per hour. If Lucy spent $30, how many hours (h) did she rent a bike?
Answers (1)
When buying a pair of jeans, Rick paid 8% of the purchase price in sales tax. If the price of the jeans was $24.50, how much did Rick pay in tax? $1.69 $1.79 $1.86 $1.96
Answers (1)
New Questions in Mathematics
Who is taller 180 cm or 5ft 8in.
Answers (2)
Samantha's notebook has 14 pages more than three times as much as Lisa's notebook. If Samantha's notebook has 260 pages, how many pages are there in Lisa's notebook?
Answers (1)
What kind of bond pays interest which is exempt from tax?
Answers (1)
What is the inverse of the function f (x) = 2x + 1? A. h (x) = 1/2x - 1/2 B. h (x) = 1/2x + 1/2 C. h (x) = 1/2x - 2 D. h (x) = 1/2x + 2
Answers (1)
A golden eagle flies a distance of 290 miles in 5 days if the eagle flies the same distance each day of its journey how far does the eagle fly per day
Answers (1)
Home
»
Mathematics
» 2x - y = - 1 5x + 4y = 17
Sign In
Sign Up
Forgot Password?