nessab nessab
  • 02-05-2020
  • Mathematics
contestada

WILL GIVE BRAINLIEST. If x+y=3 and 3x+5y=13, then x-y is equal to?

Respuesta :

TheNoobXD
TheNoobXD TheNoobXD
  • 02-05-2020

Answer:

(1,2)

y=2

x=1

Step-by-step explanation:

x+y=3

3x+5y=13

solve the equation

x=3-y

3x+5y=13

substitute the value of x into an equation

3(3-y)+5y=13

distribute

9-3y+5y=13

add -3y to 5y

9+2y=13

subtract 9 from both sides

2y=4

divide both sides by 2

y=2

substitute the value of y into an equation

x=3-2

subtract 3 to 2

x=1

--------

(1,2)

--------

Answer Link

Otras preguntas

Let g be a function of x such that g(4) = −1 and g ′(4) = 2. Find the linearization of g(4).
Calculate the node voltages in the circuit by using the nodal analysis.
What conversion factor do you use to convert 600 ft/min to inches per second?
what order do these go in? please help
The Rise, Fall, and Revival of the Balalaika Grade 11, 1280L
What does it mean when your fingers shrivel up in water?
Explain how a frog uses positive pressure to move air into and out of its lungs
Please help me :( 1.) A laser emits light of frequency = 4.74 x 1014 sec-1. What is the wavelength of the light in nm? 2.) A certain electromagnetic wave has a
Number 5 and 6 please? ​
Construct an augmented matrix for this linear system: x − y − 4z = 5 2x + 2z = 0 4x + y + z = 3.