samhen93 samhen93
  • 03-12-2014
  • Mathematics
contestada

6x-5y=22 y=-8 using systems of equations by substitution

Respuesta :

AndyBryer
AndyBryer AndyBryer
  • 03-12-2014
We need to sub y=-8 into the first equation
6x+40=22
6x=-18
x=-3
Answer Link
luana
luana luana
  • 03-12-2014
[tex] \left \{ {{6x-5y=22} \atop {y=-8}} \right. \\\\ substitute\ y=-8\ into\ first\ equation\\\\ 6x-5*(-8)=22\\\\ 6x+40=22\ \ \ | subtract\ 40\\\\ 6x=-18\ \ \ | divide\ by\ 6\\\\ x=-3\\\\ y=-8[/tex]
Answer Link

Otras preguntas

What are two different ways to describe and label the layers of the Earth?
What is two thirds minus six thirds
When was William Shakespeare born
What three islands are located off the East African coast
is it possible for a distance versus-time graph to be a vertical line?
What are two different ways to describe and label the layers of the Earth?
Can u paraphrase the quote ”let things take their course”
is it possible for a distance versus-time graph to be a vertical line?
Solving systems by elimination: 2x + 4y = -4 3x + 5y = -3 Please show me your work so I can do the rest myself. Thanks!
two identical freight cars roll without friction towards each other on a level track. one car rolls 2 m/s the other 1 m/s. after the cars collide they couple an