joaopedromatesco
joaopedromatesco joaopedromatesco
  • 12-11-2019
  • Mathematics
contestada

X + y = 9/x - y = 5?????

Respuesta :

mide010877 mide010877
  • 12-11-2019

Answer:

y=2

x=7

Step-by-step explanation:

subtract equation 1 from 2

0+2y=4

y=2

substitute y into equation 1

x+2=9

x=9-2

x=7

Answer Link

Otras preguntas

List four occasions on which Peter spoke with grace and boldness in the book of Acts.
Can someone help me with this math homework please!
a + 1/a= p find a^3 + 1/a^3(1) p^3 + 3p(2) 3p(3) p^3 - 3p​
In triangleABC, AC = 15 centimeters, m
this 2 pls i need help with explanation sum
What is the device that converts the signals to and from the wires so that the data can be sent and received by the computer? A domain name system B network C r
factor 9-x^2 completely
George has opened a new store and he is monitoring its success closely. He has found that this store’s revenue each month can be modeled by r(x)=x2+6x+10 where
¿ ___ tú a la cafetería ahora?
What was a major focus in Egyptian society? O A. The afterlife B. Hunting and gathering food C. A system of laws D. War with other civilizations