Fernando3230 Fernando3230
  • 02-06-2018
  • Mathematics
contestada

Cuanto es (2x+2y=20) (-2x-6y=-52) con método de igualación y método de suma y resta

Respuesta :

vidalmari6p99qfk
vidalmari6p99qfk vidalmari6p99qfk
  • 02-06-2018

x =2       y =8

2x + 2y=20

2x=20-2y

x=10-y

Ahora len la otra ecuacion remplazamos x por (10-y)

-2(10-y)-6y=-52

-20+2y-6y=-52

2y-6y= -32 (-52+20= -32)

-4y=-32

-y=-8

y=8            x=10-y  x=2

2*2+2*8=20

4+16=20

-2*2-6*8= -52

-4-48= -52


Answer Link

Otras preguntas

Which sentence contains a misplaced or dangling modifier? A. Excited by the snow, the boy could not wait to get out of school. B. Reading to learn new things ca
TRUE OR FALSE? The Pope as the head of the Roman Catholic Church assumes power as an elective monarch by being selected by Church officials
The great cultural center of Timbuktu was part of which West African society? a. Ghana b. Benin c. Mali d. Songhai
Can anyone help me ????? Please
a device that does work in an electrical circuit
How are the types of energy in the electromagnetic spectrum defined? (Points : 3) by their atomic structure by their color by their amplitude by their wavelengt
A difference between Commodore Perry's "Black Ships" and the Great White Fleet was that the "Black Ships" :
What is the slope of a line represented by the equation 2y = × - 4?
Activists in the counterculture movement were successful at doing which of the following? weakening the Republican Party turning public opinion against the Viet
Help on logarithmic equation