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 ( 69+ )
Otras preguntas
covalent bonds are not affected by chemical reactions. true or false?
What is the 90° angle plus the 40° angle
Which two societies could definitely be called civilizations?
You will be safe from downloading viruses as long as you have software to monitor your computer.
Ricardo has a marble collection with 54 blue marbles, 24 red marbles,and 18 yellow marbles. He arranges the marbles into equal rows. The marbles in each row w
If i have 8 foot piece of wood to trim bookshelf, I need 100 inches lumber for trim, do i have enough lumber?
what were some consequences suffered by the 56 signers of the declaration of independence
write a division problem that will have a 2 digit quotient and another division problem that will have a 3 digit quotient
when is heat positive or negative? I need it please help me
Good conversation skills require both listening and speaking fluency. a. True b. False
