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

Is the quotient of 5 and 1/2 greater than or less than 5? Explain your answer in complete sentences.
What are all of them??
Evaluate the following expression using the given values: (1 point) Find x - 3y if x = 3 and y = -2. -9 -3 3 9
7 ∙ 15 can be written as _____. 5(7 + 10) 10(7 + 5) 7(10 + 5)
what factors contributed to hitler rising to power in Germany prior to would war 2
Find the length of each object to the nearest centimeterand millimeter.6.Width of a book 7. Length of a pencilPLS HELP HURRY I WILL MARK BRAINLESS IF THE ANSWER
Correct answers only please! Quincy has $6,000 in a savings account that earns 4% interest, compounded annually. To the nearest cent, how much interest will he
Mateo finds a special on apples for $0.80 per pound. Which price is a better deal? A. $0.78 per pound B. $0.85 per pound C. $0.90 per pound D. $1.25 per pou
how technological developments have informally changed the Constitution up until now
Quando colocamos roupas molhadas no varal em dias quentes percebemos que as roupas depois de um tempo ficam secas. Qual o estado físico que se encontra nas roup