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

PLease answer for me. I have been struggling for a day.
Which is larger 5.16 or 5.22
Given that y1(t)=cos(t) is a solution to y''-y'y=sin(t) and y2(t)=1/3e²t is a solution to y''-y'y=e²t. What is the general solution to the differential equation
Read Shakespeare's "Sonnet 100." Where art thou Momentan ou forget'st so long To speak of that which gives thee all thy might? Spend'st thou thy tury on some wo
Males tend to prefer which type of gambling more than females?
Using front-end estimation, what is the correct estimation of the sum, 23+33+44+51+31 -A. 180B. 170C. 160D. 150
what is the equivalent ratio in the simplest terms for 16:8
Prove that (cos(3A) - sin(3A))/(1-2sin(2A)) ≡ cos(A) + sin(A) Topic : Trigonometry # Proving Trigonometric Identities # Double Angle Identities # Addition Iden
Bonjour je dois trouver 11 mot qui qualifie ou sont présent dans la nouvelle le portrait ovale et je dois dire pourquoi je les ai choisi ( mots interdits portra
Write 8/10 as a percentage