126952 126952
  • 10-06-2019
  • Mathematics
contestada

3x – y = 28
3x + y = 14

Respuesta :

kishor1794
kishor1794 kishor1794
  • 10-06-2019

Step-by-step explanation:

3x=28+y

x=28+y÷3

then puttingx=28+y÷3

3x=14+y

3(28+y÷3)+y=14

84+3y+3y=42

3y+3y=42-84

y=-42÷6

y=7

so putting y=-7

3x-y=28

3x-7=38

x=38+7÷3

x=15

Answer Link

Otras preguntas

Sketch the following to help answer the question. Kite QRST has a short diagonal of QS and a long diagonal of RT. The diagonals intersect at point P. Side QR =
Sally was able to drive
True or False:The ruling Mongols forced the Chinese to accept the Mongol way of life.
An object traveled 691.12 feet in 21.2 seconds.Find both unit rates. A.32.6 s/ft and approximately 0.03 ft/sB.32.6 ft/s and approximately 0.03 s/ftC.32.6 s/ft a
When recording a personalized voicemail greeting on your office phone, your greeting should A. include only the company name and your extension number. B
When a member of a group diverges from acceptable standards, or norms, of social behavior, he/she may be ridiculed, arrested, or otherwise pressured into confor
BRAINLIESTTT ASAP!!! How does temperature influence the appearance of a star? Give an example in your response.
What did the union soldiers believe they were fighting for? what did the confederate soldiers believe they were fighting for? did those understandings change ov
Please select the word from the list that best fits the definition Te gustaban los libros de amor.
help me please I'm having trouble!!!!