vibes2018 vibes2018
  • 04-06-2019
  • Mathematics
contestada

Solve the system of equations using substitution. Show your work.

3x + 2y = 7

y = x - 4

Respuesta :

yungcee247 yungcee247
  • 04-06-2019

Answer:

x = 3

y = -1

Step-by-step explanation:

Finding X

Substitute y into the 1st equation

3x + 2(x-8) = 7

Simplify

3x + 2x-8 = 7

Combine like terms

5x - 8 = 7

Move the constant (-8) to the right

5x = 7+ 8

Simplify

5x = 15

Divide both sides by 5

x = 3

Finding Y

Now since you know x is 3 substitute that into the 2nd equation

y = 3 - 4

y = -1

Answer Link
sarakhalil31804
sarakhalil31804 sarakhalil31804
  • 04-06-2019
X=3
Y=-1 ...................
Answer Link

Otras preguntas

What is 38/50 as a decimal... and what is 28/50 as a decimal? PLEASE HELP ME !!!! i hate struggling with homework!
Orchids are a type of flowering plant. How would biologists explain how a living orchid species lacking leaves evolved from an ancestral orchid species that had
My daughter needs a synonym for tired and all the word she has is problem , story and banquet
List the perfect squares between 100 and 500 that are even numbers.
sophia has 3 pink tulips and 3 white tulips. what fraction of sophias tulips are pink
what is 20% of $45.00?
Write an equation for a non-vertical line that contains the point ( 2,-4 )
Help please this I'd for geometry
What is %15 of $35.15 What is %15 of $27.00
the length of a rectangle is 3 feet less than twice the width of the rectangle. if the perimeter of the rectangle is 324 feet, find the width and the length?