jonaiahlouisjeune jonaiahlouisjeune
  • 01-02-2021
  • Mathematics
contestada

2х - Зу = 9
5x - Зу = 30

2х Зу 9 5x Зу 30 class=

Respuesta :

beautifulmind2468
beautifulmind2468 beautifulmind2468
  • 01-02-2021

Answer:

(x, y) = (7, 5/3)

Step-by-step explanation:

2x - 3y = 9

5x - 3y = 30

(5x-3y) - (2x-3y) = 30 - 9

5x-3y - 2x +3y = 21

3x = 21

x = 7

So, substituting the value of x into the first equation, we get 2*7 - 3y = 9. Simplifing, we get,

14 - 3y = 9

-3y = -5

y = 5/3

Answer Link

Otras preguntas

The circumfrence of a ball is 60cm. The ball rolls 16.2m. How many times does the ball make one complete roll?
What did Susan B. Anthony do?
Name one state that borders Canada
help on questions 11 and 15 Add and simplify if possible
Which compound is an electrolyte? (I) CH3CHO (3) CH3COOH (2) CH3OCH3 (4) CH3CH2CH3
the sum of two integers is -1. the product of the integers is -72 find the integers.
Help solve the following equation: 20.6 + 2.1x = -8.2x
What was one important thing that Abraham Lincoln did?
Why did the gap between rich ans poor in Latin America grow after independence.
What are two ways that Americans can participate in their democracy?