yellowsunnyydamaris yellowsunnyydamaris
  • 21-04-2021
  • Mathematics
contestada

-2x - 8y = - 60 2x+y=-45 solve for y

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 21-04-2021

9514 1404 393

Answer:

  y = 15

Step-by-step explanation:

The coefficients of x are opposites in the two equations, so adding the equations will eliminate x.

  (-2x -8y) +(2x +y) = (-60) +(-45)

  -7y = -105 . . . . . simplify

  y = 15 . . . . . divide by -7

___

x = -30

Answer Link

Otras preguntas

my number has a tens digit which is 8 more than 1
A TV that usually sells for $178.09 is on sale for 30% off. If sales tax on the TV is 5%, what is the price of the TV, including tax?
There are 5,280 feet in a mile. If Ann ran 1,320 feet and walked 3,960 feet, her total distance would be one mile. What fraction of the mile did she run? What f
What is 46,491 rounded to the nearest ten thousand
Two species cannot occupy the same niche because a. one species will be successful and "move up" into another niche. b. they will compete for food or shelter
james has 12 seashells mounted in a row.The 6 shells in the center of the row are nautilus shells. Is there the same number of shells on either side of the naut
what is 5000 rounded to the nearest hundred
is 11/12 greater or less than 2/3?
what letter comes next 1I2L3F4
What is the solution to the equation –10.3+y = 5.2? a. –5.1 b. 5.1 c. –15.5 d. 15.5