millerluke millerluke
  • 02-10-2020
  • Mathematics
contestada

Solve the system by substitution.
3x +2y=-21
x+y=-9

Respuesta :

Ukmmmmm
Ukmmmmm Ukmmmmm
  • 02-10-2020

Answer:

Step-by-step explanation:

3x +2y=-21  and x+y=-9

3x +2y=-21  and x = -9-y

=> 3(-9 - y) + 2y = -21

-27 -3y + 2y = -21

-y = 6

y= -6

=> x = -9+6= -3

Answer Link

Otras preguntas

The discovery of gold in Transvaal contributed to the start of _____?the Anglo-Boer WarWorld War IIWorld War Ithe Peloponnesian War
Substitution how do u do it??
next term in sequence 61, 122, 244, 488
HOW TO FIND THE MISSING NUMERATOR IN ANY FRACTIONS LIKE 4/8=  ?/4
the length of a rectangle is 3 feet less than twice the width of the rectangle. if the perimeter of the rectangle is 324 feet, find the width and the length?
What is %15 of $35.15 What is %15 of $27.00
what is the prefix of enactment?
How did New England's physical geography help the growth of industries?
What is the Geocentric theory in your own words?
how does.debate in the senate differ from debate in the house?