Sign In
Ask Question
Mathematics
Ana Peterson
6 December, 10:53
What is 5y-4x = -7
2y+4x=14
X=?
Y=?
+2
Answers (
1
)
Felicity Rivers
6 December, 11:13
0
X=3
Y=1
Step-by-step explanation:
In solving simultaneous equations, there are three methods, we have the elimination method, substitution method or graphical method. But for the purpose of this question, we would be using Elimination method.
5y-4x = -7 Equation 1
2y+4x=14 Equation 2
Since x has the same coefficient, it's easy to eliminate by adding up the two equations
5y+2y=7y
-4x + (+4x) = 0
-7 + (+14) = 7
We have 7y=7
Divide both sides by 7,
y=7/7
y=1
Substituting for y in equation 2.
2 (1) + 4x=14
2+4x=14
4x=14-2
4x=12
x=12/4
x = 3
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Get an answer to your question ✅
“What is 5y-4x = -7 2y+4x=14 X=? Y=? ...”
in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
The price of a video game system was $359. The price decreased to $199. What is the percent decrease on the price of this system?
Answers (1)
C (48,5) = A: 12,271,512 B: 1,712,304 C: 194,580 D: 35,673
Answers (1)
Gwen has a £5 note and a £2 coin A liter of cola costs £1.25 Gwen buys as many liter bottles as she can How much money will she have left over
Answers (2)
40 is 8% of what number?
Answers (1)
Solve the equation for yy. Leave your answer in terms of π. π=7x-2y
Answers (1)
New Questions in Mathematics
Is x=3 a function and or a relation?
Answers (2)
A tennis player lands 25 out of 40 first serves in bounds for a success rate of 62.5%. How many more consecutive first serves must she land in bounds to increase her success rate to 70%.
Answers (1)
What is (x+6) ^2 and (x-3) ^2
Answers (1)
How to write a mixed number
Answers (1)
Fernando has a bucket that holds 3 gallons of water. he is filling the bucket using a 1-pint container. how many times will he have to fill the pint container in order to fill the bucket?
Answers (2)
Home
»
Mathematics
» What is 5y-4x = -7 2y+4x=14 X=? Y=?
Sign In
Sign Up
Forgot Password?