Ashleymackenzie2015
Ashleymackenzie2015 Ashleymackenzie2015
  • 04-01-2016
  • Mathematics
contestada

How many solutions are there to the following system of equations?
5x 3y=7
2x-y=2

Respuesta :

Billymkhoi
Billymkhoi Billymkhoi
  • 04-01-2016
5x + 3y = 7 (1)
2x - y = 2 (2)

Multiply (2) by 3:
6x - 3y = 6 (3)

Take (1) + (3):
(5x + 6x) + (3y-3y) = 7+6
⇒ 11x = 13
⇒ (11/11)*x= 13/11
⇒ x = 13/11.

y = 2*13/11 -2= 4/11

The final answer is x=13/11, y=4/11.

Answer Link

Otras preguntas

China's diverse topography and location have resulted in which of the following developments? A. its relative isolation throughout its long history B. its role
how many times does 45 go into 323
13(10+2) can be simplified as
Which term describes this diagram? A. trophic level B. food web C. food chain D. matter cycle
I NEED THE ANSWER!!!!
Why is mechanics in writing important
what led to bantu education?
who predicts that macbeth will someday become king?
what is the relationship between reason and faith, according to aquinas?
what region of texas contains the states largest city