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

Which statement will read an entire line of input into the following string object? Select one: a. cin << address; b. cin address; c. getline(cin, address
Carl's cats weigh a total of 12 kg (kilograms). Bo weighs 5 1/2kg. Tommy weighs 2 1/3 kg. How much does Suzi weigh?
y greater than or equal to |x| + 3which of the following is NOT a solution of the inequality
The length of a rectangle is 3 feet more than twice the width. Find its area if its perimeter is 7 1/3? Plssss help me fast!!!!!!!!
Pleaseeeee helpppp meeeeeee!!!!!!!!
What is the preferred approach to risk mitigation? -Tolerate -Transfer -Terminate -Treat
The vitamin essential for synthesis of prothrombin in blood clotting is:______
Story: The gift of the Magi
can anyone help thank you ggg
What is equivalent to (x-6)^2