barnhart115 barnhart115
  • 04-06-2019
  • Mathematics
contestada

What is the solution to the system of equations? Use the linear combination method.
{2x−3y=9
{3x+5y=4

Respuesta :

nagichan
nagichan nagichan
  • 04-06-2019
1. {2x−3y=9
{3x+5y=4

2. {(2x−3y=9)×5
{(3x+5y=4)x3

3. {10x-15y=45
{9x+15y=12

4. (10x-15y=45) + (9x+15y=12)= (19x=57)

5. (19x=57)÷19

6. x=3

7. 2(3)-3y=9

8. 6-3y=9

9. -3y=9-6

10. (-3y=3)÷(-3)

11. y=-1

Answer: x=3 and y=-1
Answer Link

Otras preguntas

Someone help me on 31 And 1-7 please
Two plane metal plates 4 cm long are held horizontal 3 cm apart in a vacuum one being vertically one above other. The upper plate is at a p.d 300 volt and the l
Help!!! me please!!!
Using algebra tiles, the area model below models the multiplication of two binomials.
What might be an interesting way to present this passage to a group to make it clearer and more meaningful? Travel is expressive Any teenagers dreaming of their
I have no idea what to do help !!!
This year consumers purchased 7,234,267,990 bottles of water. Last year consumers purchased 2,000,900,999 bottles of water. Which is the best estimate of the nu
How many neutrons are in the nucleus of a chlorine-35 isotope?
A small fly weighs approximately 2.2 • 10^-3 gram and an average sized gnat weighs approximately 9•10^-4 1. find the sum of the weights of the two insects 2. H
please answer 1-4 10 pts will mark brainliest!!