caeyanij caeyanij
  • 21-08-2018
  • Mathematics
contestada

Solve the System of Equations:-10x-3y=-18
-7x-8y=11

Respuesta :

choixongdong
choixongdong choixongdong
  • 21-08-2018

-10x - 3y = -18 (1)

-7x - 8y = 11 (2)

Multiply equation (1) by 8 and equation (2) by -3

-80x - 24y = -144 (1)

21x + 24y = -33 (2)

-------------------------------Add

-59x = -177

x = 3

Plug in x = 3 into -10x-3y=-18

-10(3) -3y =-18

-30 - 3y = -18

3y = -12

y = -4

Answer

(3, - 4)

Answer Link

Otras preguntas

How did conditions in new spain and new france differ fromvirginia andnew england?
Refer to Explorations in Literature for the complete version of this story. Why is this scene part of the rising action of the story? The trap in which Jimm
6 • (4 + 2)2 – 32 answer.
Amino acids are important to the body because they build _
Who was the president of the u.s. when the hawley-smoot tariff act was passed
Find the product of 6372×75
Which line from the poem “Edge” contains an allusion? A. “The woman is perfected” B. “Feet seem to be saying” C. “Each dead child coiled” D. “The illusion of a
Philosophers and psychologists have a shared interest in, among other things, ______.
The number of points that lie on a period at the end of sentence are A.visible B.nonexistent C.measureable D.infinte
Find the product of 21 and (6.3 · 10^-4). A) 0.1323 · 10^-1 B) 1.323 · 10^-3 C) 1.323 · 10^-2 D) 1.323 · 10^2