herode herode
  • 01-03-2020
  • Mathematics
contestada

-7x + y = -19
–2x+3y=-19

Respuesta :

adekuadenike30 adekuadenike30
  • 01-03-2020

Answer:x=3,y=-5

Step-by-step explanation:

-7x+y=-19...(1)

-2x+3y=-19...(2)

Subject of formula from (1)

Y=-19+7x....(3)

Substitute (3) into (2)

-2x+3(-19+7x)=-19

-2x-57+21x=-19

Collect like terms

-2x+21x=-19+57

19x=38

X=2

Substitute x=2 to equation (3)

Y=-19+7(2)

Y=-19+14

Y=-5

X=2 and y=-5

Answer Link

Otras preguntas

Solve the given system of differential equations by systematic elimination. 2 dx dt − 6x + dy dt = et dx dt − x + dy dt = 7et
If AB = 13, BC = 9, and CA = 17, list the angles in order from smallest to largest.
An element's atomic number is 77. How many electrons would an atom of this element have?
Agnolo bronzino's portrait eleonora di toledo and her son giovanni conveys a sense of:
ΔABC has the vertices A(0, 0), B(-8.5, 3), and C(0, 6), and ΔAXY has the vertices A(0, 0), X(-3, -8.5), and Y(-6, 0). Which transformation can be used on ΔABC t
Will give brainiest! Geometry help!
Which contains instructions for how cells come together to form a heart
What volume of a 0.580-m solution of cacl2 contains 1.28 g solute?
Help me with this problem please
What best describes when our scientific body of knowledge was developed ????