Xanderr Xanderr

02-10-2020
Mathematics

contestada

Plz help me.
Solve the system of linear equations by substitution
X+y=-7
-5x+y=5

Respuesta :

jennyzhang096 jennyzhang096

05-10-2020

Answer:

x= -2 y= -5

Step-by-step explanation:

X+y=-7

x+-y-7

-5(-y-7)+y=5

5y+35+y=5

6y+35=5

6y=5-s5

6y=-30

y=-5

-5x+(-5)=5

-5x=5+5

-5x=10

x=-2

Answer Link

Otras preguntas

What is the main religion of Latin america

What is a series of events that cells go through as they grow and divide

Morgan found a stone arrowhead. He measured it three times. He measured it as 2 inches to the nearest inch, to the nearest 1/2 inch, and to the nearest 1/4 inch

How did Alexander the Great rise to power and how did he spread Greek culture to other lands?

What sorts of signals does the brain use to communicate sensations, thoughts and actions?

why can parents who are heterozygous for type a and type b blood have children with any of the four human blood types?

why can parents who are heterozygous for type a and type b blood have children with any of the four human blood types?

the area of a triangle is 41 yards to the second power with a base of 5 yard what is the height in yard

Why were the 1920's considered the best and worst of times?

Graph the line using intercepts: 4x-3y=12