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

NEED HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!! You are in charge of decorating for the spring dance. You purchase 5 bags of balloons and 2 rolls of crepe paper for

What is the scientific notation of 6,780?

chemical reactions that absorb more energy than they release are called

Tell how you can determine whether a number is a solution of an equation.

Volcanoes _____. are caused by weathering are caused by tsunamis cause liquefaction are both constructive and destructive

Help please Solving Systems Using Inspection How many solutions does this system of equations have? A. none B. exactly one C. exactly two D. infinitely many

when you open a solid room air freshener, the solid slowly loses mass and volume. how do you think this happens?

Fred completed 10 math problems this is 40% of the math problems he must do how many are left??

Animals without a backbone are classified as ________. crustaceans invertebrates arthropods worms

What times what equals 24