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 ( 53+ )
Otras preguntas
Which sentence uses a verb that agrees with its compound subject? A.Either calculators or an adding machine make an accountant's work easier. B.Both cows and
Manuela planted 5 patches of beans Each patch had 8 rows of 27 beans plants. How many bean plants are in each patch? How many bean plants did Manuela plant in a
a region in which there is a high probability of finding an electron is called a field
in what ways is the Holy Land an important site for all three monotheistic faiths
members of which phylum contain stinging capsules that poison the entangled prey
is 2 squared between 1.4 and 1.5
what is 5,900 round to the nearest thousand
How many rolls can you make with 5 2/3 cups of flour?
Ozone is both helpful and harmful to life on Earth. True Or false I believe true?
When you weigh yourself, are you actually reading the support force acting on you, or are you really reading your weight?
