Register
Solve the system of equations. 3x - 4y = -10 and 5x + 8y = -2 A. (1, 2) B. (2, 1) C. (1, -2) D. (-2, 1)
48.4k views
4 votes
Solve the system of equations.

3x - 4y = -10 and 5x + 8y = -2
A. (1, 2)
B. (2, 1)
C. (1, -2)
D. (-2, 1)

User Jkrcma
by
8.0k points

1 Answer

5 votes
3x - 4y = -10....multiply by 2
5x + 8y = -2
---------------
6x - 8y = -20 (result of multiplying by 2)
5x + 8y = -2
---------------add
11x = -22
x = -22/11
x = -2

3x - 4y = -10
3(-2) - 4y = -10
-6 - 4y = -10
-4y = -10 + 6
-4y = -4
y = -4/-4
y = 1

solution is : (-2,1)

User OnTheFly
by
8.0k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Write words to match the expression. 24- ( 6+3)
The cost of 5 similar digital cameras and 3 similar video cameras is 3213. Each video camera costs 4 times as much as each digital camera. John buys a digital camera and a video camera. How much does he
Mr. Jacob is 55 years old and tony is 7 years old. in how many years will mr. Jacobs be 4 times as old as Tony
Link Copied!