imanuelrui75
imanuelrui75 imanuelrui75
  • 22-07-2021
  • Mathematics
contestada

2x + 3y = 5 2x + 7y = 9

please do this. for me​

Respuesta :

Ujjwal11
Ujjwal11 Ujjwal11
  • 22-07-2021

Now,

2x + 3y = 5

x = (5 - 3y)/2 ------ 1.

2x + 7y = 9

x = (9 - 7y)/2 -------2.

Combining eq. 1 and eq. 2

(5 - 3y)/2 = (9 - 7y)/2

or, 2 (5 - 3y) = 2 (9 - 7y)

or, 10 - 6y = 18 - 14y

or, 14y - 6y = 18 - 10

or, 8y = 8

β—† y = 1

putting the value of y in eq. 1,

x = (5 - 3y)/2

= (5 - 3*1)/2

= 2/2

β—† x = 1

I hope you understand...

This is a Right answer...

Answer Link

Otras preguntas

What is the probability of both coins landing on heads?
Help please!!!!!!!!!
6 the incomplete pictogram shows information about the number of eggs sold shop on monday. monday tuesday wednesday on monday the shop sold 18 eggs. on tuesday
What fraction of an hour is 32 minutes? Give your answer in its simplest form
What is thought to have caused massive changes to the environment all over the ancient world causing mass extinction, based on the fossil record? (a) earthquake
Please help Fast! Need answer by 1:00 pm
I forgot how do do these anyone remember please
pls help i was going to help them but i don't fully understand
Explain how the human immune system responds to a viral infection.
A toy pyramid has the dimensions shown below. The base of the pyramid is an equilateral triangle. What is the area of the base of this pyramid?56 cm 232 cm 264