gamerhunter425
gamerhunter425 gamerhunter425
  • 19-01-2018
  • Mathematics
contestada

Solving by using elimination:
7x+4y=2
9x-4y=30

Respuesta :

dannielle
dannielle dannielle
  • 19-01-2018
 7x + 4 y = 2
9x   - 4y= 30
-------------------
16x /   = 32
x= 32:16
x=2

7x+4y=2
7*2 + 4y=2
14 +4y=2
4y= 2-14
4y= -12
y= -12 : 4
y= - 3
Answer Link

Otras preguntas

In 1787, delegates met in Philadelphia. They came from all of the 14 states except?
what is a vetor space?
use elimination to solve x + 4y =  -8 and x - 4y = -8
Which mountain do scientists label as our most dangerous volcano ?
if 283 is divided by 4 where should the first digit of the quotient be placed
how did caesar strengthen his hold on power after declaring himself dictator of Rome for life
A bicameral legislature features?
Why didn't northern bankers,merchant ,mill owners and unskilled workers want to end slavery?
Which mountain do scientists label as our most dangerous volcano ?
Luisa mows lawns during the summer.  She charges $15 if she cuts the grass but charges $5 more if she also trims the grass.  Last week she trimmed 5 more yards