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

Why does convection occur only in fluids?
order from greatest to least 37/10 3 2/5 3 1/4
Akkad's territory encompassed most of the Fertile Crescent. a. Yes b. No
Is 2/15 a repeating decimal or a terminating decimal?
The following question references the novel Jane Eyre by Charlotte Bronte. How does Jane gain financial independence? a. Her uncle leaves her 20 thousand pounds
Express 750 dg in g.
how many more stickers does maddie's have on her notebook than on meg's note book
At the playground, 60% of the bike rack was filled. Thisis 30 bikes. How many total slots are there for bicycles?
Perdita goes to the fruit market with $9 to buy avocadoes. Each avocado costs $2. Write and solve an inequality to find the greatest number of avocadoes Perdita
How do you round 3,962 to the nearest hundred