yessy2004
yessy2004
02-11-2019
Mathematics
contestada
3(x+y)=7(y-x), 5(3x-y)=x+3
Respuesta :
dsabbide
dsabbide
02-11-2019
Answer:
i am not sure thi sis the first one
Answer Link
juju739
juju739
02-11-2019
3(x+y) = 7(y-x)
3x+3y = 7y-7x
3x+7x +3y -7y = 0
10x - 5y = 0 —> *7
70x-35y = 0
5(3x-y)=x+3
15x-y =x+3
15x-x-y = 3
14x -y = 3 —>*5
70x-5y =15
70x-70x-5y-(-35y) = 15
30y = 15
y = 1/2
-2.5 +10x = 0
10x = 2.5
x = 0.25
Answer Link
VER TODAS LAS RESPUESTAS ( 21+ )
Otras preguntas
What major events occurs in frankenstein's life when he is 17 years old?
Who are the main characters of The Prince and the Pauper? A. Tom Canty and Prince Edward B. the King of England and Prince Edward C. John Canty and Lord St.
What law made it illegal to spread contraceptive information and devices?
Which person would have been LEAST likely to be considered a "Progressive" in the early 20th century? A) farmer B) socialist C) housewife D) journalist
In what way were japanese americans treated differently than german americans and italian americans?
why was johnson more successful than truman in getting civil rights legislation passed?
what is hd-tv and how does it relate to plasma and lcd television
Which of the following is a true statement? A If n + 14 = -15, then n = -1.07143 B If 14 + n = -15, then n = -1 C If 14 + n = -15, then n = -29.0 D If 14
island -hopping was a strategy associated with
Describe the characteristics of a tragic hero.
