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

literary images are enhanced by the use of _______ language.
On average Exante Express trains are 50km/hr faster than Paral passenger trains. A Paral passenger train requires 60% more time then Exante train to travel 1800
What is/was the American dream? I need at least 10 bullet points about what the American dream was please somebody help me
what kind of symbiotic relationship is showm between Dori and Marlin
15 times what equals 45
What is the value of 9P5? A. 45 B. 126 C. 15,120 D . 59,049 A cooking club has 12 members.How many ways can they select a president and vice presiden
What is the simplified form of the expression 2 * [(1+14)*7]+6/0.5^3?
Write good insulators around the home
reduce 15 1/4 +1 1/2 +3/20 to lowest term.
How long does water evaporation take? What factors influence it?