puddinpopz
puddinpopz puddinpopz
  • 08-10-2020
  • Mathematics
contestada

3x = 27 + Зу
3х - 10у = 27

please explain how you got the answer.

Respuesta :

madison2014nc
madison2014nc madison2014nc
  • 09-10-2020

Answer:

Hi there!

Your answer is:

Y= 0

X= 9

Step-by-step explanation:

3x=27+3y

3x-10y=27

Solve one of them for Y

I chose the first equation

3x=27+3y

-27

3x-27=3y

/3

x-9 = y

NOW, plug y in the second equation!

3x-10y=27

y= x-9

3x-10y=27

3x-10(x-9) = 27

Solve for x!

3x-10x+90 = 27

-7x + 90 =27

-90

-7x = -63

/-7

x= 9

FINALLY, plug back in x for y equation

y=x-9

x=9

y=9-9

y=0

Answer Link

Otras preguntas

Help please! Will give brainliest
Mass of 39.912 and density of 2.71 what is the volume in mL
What are the two procedures for ratifying and amending the US Constitution? (Select all that apply.) A reviewing the amendment B calling for an amendment conv
I’m confused on this one
A vast plain of rolling hills are actually folds of _____.
A group of college students is volunteering for help the homeless during their spring break. they are putting the finishing touches on a house they built. worki
The sum of a number and 6 is at least 15
Which expression is equivalent to xy^2/9
trust vs mistrust in conversation
The most common weather condition that emergency vehicle operators will encounter while driving is: