carysx
carysx carysx
  • 25-10-2018
  • Mathematics
contestada

Solve the simultaneous equation:
3x+y=-4
3x-4y=6

Respuesta :

choixongdong
choixongdong choixongdong
  • 25-10-2018

3x+y=-4

3x-4y=6

--------------subtract

5y = -10

y = -2

Substitute y = -2 into 3x + y = -4

3x + (-2) = -4

3x - 2 = -4

3x = -2

 x = -2/3

Answer

Solution x = -2/3, y = - 2 OR (-2/3 , - 2)

Answer Link

Otras preguntas

Adam has $87.14. He has 10 bills and 19 coins how ? Explain how you solved it .
the lysosomal enzymes show optimal activity in ------------ph.
which quadratic inequality does the graph below represent? y> or equal to x^2-3. y< or equal to x^2+3. y< or equal to x^2-3. y> or equal to x^2+3​
In your own words, explain why photosynthetic cyanobacteria were likely the first organisms to survive and thrive in the harsh conditions on early Earth.
Which of the following best describes a fractional reserve banking system? O A. A banking system in which net worth is calculated by subtracting a fraction of l
Write a summary about the benefits of using Fog catchers
Why does the stick immersed into water look bent? Explain with the ray diagram​
Which histogram represents this data set? 6, 7, 6, 2, 4, 5, 7, 1, 5, 8, 3, 5, 8
The drama club is selling tickets to their play to raise money for the show's expenses: Each student ticket sells for $5 and each adult ticket sells for $7.50 T
Which graph represents (x,y)(x,y)left parenthesis, x, comma, y, right parenthesis-pairs that make the equation y = 2xy=2xy, equals, 2, x true? Choose 1 answer: