Marissababy Marissababy

03-05-2017
Mathematics

contestada

8x-9y=19 4x+y=-7 How Do I Do This Type Of Math

Respuesta :

mreijepatmat mreijepatmat

03-05-2017

8x-9y=19
4x+y=-7
Multiply all terms of the 2nd by (9)===> 36x + 9y= 63

add (36x 9y= 63) to the 1st ===> 44x+0y = -44 ===> x=-1
replace x by this value in any of the equation & you'll get y=-3

Answer Link

Otras preguntas

How many different ways can you group a red apple, a green apple, a tomato, and a banana? (For example , I'll place apples in one group, and non-apples in anoth

determine the most precise name of the quadrilateral ABCD from the information given. for #13 & #14

Express the exact value of csc 60 degrees with a rational denominator?

why does the same side of the moon always face the earth?

please give three reasons why a battle would happen in a certain area ? :)

70-q-q-2q=80 We'll this is confusing

Which sentence does not contain any errors? A. Fortunately, information on they're collars helped us locate the owners of the dogs.

genes are carried from parents to offspring on structures called

How many people could read in France in 2000, 2001, 2002, 2013?

PLEASE HELP 20 POINTS!The sum of the x- and y-intercepts of the graph of 5x+3y = k is 32 5. Find the length of the line segment joining the x- and y-intercepts.