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
Which sentence correctly uses hyphens
PLEASE HELP I WILL BRAINLIEST ANYONE!!
This branch of psychology applies psychological principles to diagnose and treat behavior and learning problems in children and adolescents
For each transaction, (1) analyze the transaction using the accounting equation, (2) record the transaction in journal entry form, and (3) post the entry using
Which is the graph of 9x + 5y>7
If you know two points on a line, why can't you write two different equations for that line?
How did President George W. Bush make use of logos (facts and statistics) in the speech. ses logos by
2 months after United States entered the War of 1812 the USS Constitution
A block has a mass of 25 grams and a volume of 24.5 cm3 what is the density of the block?
BIOLOGY HELP!! which match the correct choices having hard time understanding
