dss354201
dss354201 dss354201
  • 04-06-2020
  • Mathematics
contestada

please help me. how would you change x + 3y = 18 -3x -12y = -75 to eliminate y showing all of the work

Respuesta :

KurdishPotato
KurdishPotato KurdishPotato
  • 04-06-2020

Answer:

x = -3

y = 7

Step-by-step explanation:

x + 3y = 18

-3x - 12y = -75

multiply first equation by 4

4 × (x + 3y) = 18 ➡ 4x + 12y = 72

now add the two equations up

4x + 12y - 3x -12y = 72 - 75 (-12y will eliminate 12y)

x = -3

Answer Link

Otras preguntas

In their discussion of male-female relationships, john and mary come to the conclusion that men are prisoners of their hormones and simply not capable of formin
Which factor presents the greatest threat to biodiversity?
The equator blank latitude
I need help on an original three paragraph essay! The prompt is "If the president signs a free trade agreement between the United States and Brazil what effects
A baseball player has a batting average of 0.380. What is the percentage of hits for his times at bat?
Consumer rotation was used during world war two as a way to
Blakemore discusses how the level of embarrassment children and teenagers feel changes over time. explain a situation in which you were embarrassed by something
How did the geography of Greece affect the location of cities
What is the measure of angle LKJ?
What is the median???????