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 ( 65+ )
Otras preguntas
How do people get to be a member of the powerful federal reserve board?
Math functions. Find the common difference from this sequence. Starts with t(1). 0,4,16,36,64
Difference between scalawags and carpetbaggers
What were the two reasons that the Polish government imposed martial law in Poland in the early 1980s?
please help me !!!! part 3
What destroy billions of dollars of food crops worldwide annually
Which of the following statements best describes the state of the American economy between 1865 and 1900?
Which sentence would be most appropriate for a book report? The writer's too interested in scenery to interest me. The book captures the spirit of coun
there are two numbers. the sum of the larger number and three times the smaller number is 14. the larger number is two more than the smaller number. what is the
compare and contrast: Good Bacteria and Bad Bacteria
