cas0sikinnorac
cas0sikinnorac cas0sikinnorac
  • 23-07-2016
  • Mathematics
contestada

how to do this equation by elimination 8x 14y= 4 and -6 -7y =-10

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 23-07-2016
eliminate the y terms

multiply -6x-7y=-10 by 2 and add to other equaiation

8x+14y=4
-12x-14y=-20+
-4x+0y=-16

-4x=-16
divide both sides by -4
x=4
sub back

-6x-7y=-10
-6(4)-7y=-10
-24-7y=-10
add 24 o both sides
-7y=14
divide both sides by -7
y=-2

x=4
y=-2
(4,-2)
Answer Link

Otras preguntas

What is the difference between keyboards in the United States and in Spanish-speaking countries?​
In your words, describe why an astronauts weight is different on the moon than on the earth?!?!​
what is the third major mountain range
Richard donates publicly traded Gold Company stock with a basis of $1,000 and a fair market value of $15,000 to the college he attended, which is considered a p
What is this thing on my boat?
Friday Night, Inc. manufactures high-quality 5-liter boxes of wine which it sells for $14 per box. Below is some information related to Friday Night's capacity
Which expression is equal to to (-10 – 2i) + (3 + i)? 0 -7 ti o – 13 – 07- -7-
Solve: 3x - 2x + 4 = 5x - 4x - 8 A) 3 B) 6 C) -3 D) no solution
biases in physical education,music and dance and how to address them​
Tina and her friends want to go bowling. Family Bowling Alley charges $1 for shoes and $4 dollars per game. Knight Owl Bowling charges $2 for shoes and $3.75 pe