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

Aaron Lloyd what is a?​
Which of the following is not a possible source of energy for chemosynthetic organisms? a. oil b. hydrogen sulfide c. methane d. water Please select the best an
PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER PLS GIVE ME A STEP BY STEP EXPLANATION!!
Simplifying Please Help!
Identify the class of the address, the number of octets in the network part of the address, the number of octets in the host part of the address, the network nu
5.analyze positive aspects of federalism ​
Simplify the expression
I need help in this question
can anyone give me some sentences for past simple, past continuous, past perfect, past perfect continuous ????
help me pleaso is for today