adhilperumannil adhilperumannil
  • 24-04-2020
  • Mathematics
contestada

Solve the following pair of linear equations by the substitution and cross-multiplication
methods :
8x + 5y = 9
3x + 2y = 4

Respuesta :

benievenance benievenance
  • 24-04-2020

Answer:

x=-2,y=5

Step-by-step explanation:

Answer Link
Anisatunizzati
Anisatunizzati Anisatunizzati
  • 24-04-2020

Answer:

x = -2

y = 5

Step-by-step explanation:

3x + 2y = 4

2y = 4 - 3x

y = 2 - 3/2x

8x + 5y = 9

8x + 5(2 - 3/2x) = 9

8x + 10 - 15/2x = 9

8x - 15/2x + 10 = 9

16/2x - 15/2x = 9 - 10

1/2x = -1

x = -1/1/2

x = -2

3x + 2y = 4

3(-2) + 2y = 4

-6 + 2y = 4

2y = 4 + 6

2y = 10

y = 10/2

y = 5

Answer Link

Otras preguntas

Solve for 8x please
Explain three ways that china expanded during the zhou dynasty.
Overall health is related to a balance of the six dimensions of health. True or False
​girls who experience harsher punishment by their mothers during their preschool and young childhood years are likely to
Jessica is training for a marathon. How much water should she drink 30 minutes before her exercise routine? 8 ounces 12 ounces 15 ounces 20 ounces
Which component is released from the active site of an enzyme during a chemical reaction?
Roads are sometimes salted to melt ice. what does this salting do to the plants along the roadside? why?
PLZ HELP WILL GIVE BRAINLIEST THANKS AND RATING PLUS 19 POINTS a straight line with a gradient of 3 passes through the point with co-ordinates (0,7) write down
what is the 7 characteristics of an empire
What does circle key terms mean