adityamaurya3307
adityamaurya3307 adityamaurya3307
  • 15-05-2020
  • Mathematics
contestada

4/x - 3/y = 1 ; 6/x + 15/y = 8 solve this equation​

Respuesta :

Zavki Zavki
  • 15-05-2020

Answer:

x=2

y=3

Solution:

First we find common denominators. It is "xy". Then we multiply numerators by common denominator. We get followings:

(4y-3x)/xy=1; (6y+15x)/xy=8

Then

4y-3x=xy;

6y+15=8xy

Multiply first equasion by 5

20y-15x=5xy

Now we add two equasions to get one

20y-15x=5xy

6y+15x=8xy

We get

26y=13xy

Cut "y" and we will find "x"

26=13x

x=2

Put x value into the first equasion(4y-3x=xy) to find out "y"

4y-6=2y

2y=6

y=3

Answer Link

Otras preguntas

cal is making energy squares how many 1 / 2 cups of peanut butter are used in the recipe
what kinds of images and allusions did modernists use
Which expression is not a polynomial? A.8x^10+2x^5 B.14x^7 C.x^2/ x^-3 D.4-3x+5x^6
Have I done question c correctly?
What is the explicit formula of: a. 1/3, -2/9, 4/27, -8/81Also, how do you find it?
A force that tries to slow things are moving through air
On a map of a city, the scale is 1 centimeter to 500 meters. If it is 4 kilometers between city hall and the library, how many centimeters is it on the map. a.
Décris un petit voyage que tu as pris. Ecris les verbes au passé composé. Also include at least one comparative statement and one superlative statement. Include
is 3/4 equal to 9/12
express this number in scientific notation 427 mil