albertogabriel2003 albertogabriel2003
  • 11-11-2018
  • Mathematics
contestada

5x+7y=41 3x-2y=6 metodo de igualación es una ecuación 2x2

Respuesta :

cmoreno511 cmoreno511
  • 11-11-2018

5x+7y=41

3x-2y=6


Multiply each equation by coefficient to y


2(5x+7y)=2(41 )

7(3x-2y)=7(6 )


Add both equations

10x+14y=82

+ 21x-14y=42

____________

3x = 124

Divide both sides by 3 to find x

3x/3=124/3


X= 4


Now select an equation substitute x to solve for y .


10x+14y=82


10(4)+14y=82


40+14y= 82

Subtract 40 both sides


40-40+14y=82-40


14y= 42


Divide 14 both sides


14y/14=42/14


Y= 3


Your answer is point form ( 4,3)

Answer Link

Otras preguntas

Find a smaller than 19 that has more factors than the numbers in part (a).
As I was sitting on a dock, I noticed that the wavelength of the waves were about 6 m long. The crest of each wave would pass the front of the dock every 8 seco
9) Solve: a^2+ b^2= c^2 for b
Explain the relationship among homeostasis, defective mitochondria, and the symptoms caused by LHON.
help on number 3 only use Pythagorean thym I give brainliest
If the labor costs were $1,500,000 last year and $1,300,000 this year, what percentage decrease was achieved? (Round to the nearest percent)
Can every body who sees this, can you go follow my spotify please?My name is "Kane Da Kid"
HELLLLLLLLLLLLLPPPPPPPPPPPPP please
5. How does Mrs. Jones's response to Roger's actions contribute to the development of the theme?
hard question plz help