yare2zkeybeaski yare2zkeybeaski

08-05-2016
Mathematics

contestada

Solve the system of linear equations below.

x − 3y = -3
x + 3y = 9

x = -12, y = 7

x = 3, y = 2

x = 6, y = 1

x = 6, y = 2

Respuesta :

garydesir1 garydesir1

08-05-2016

Good morning

x-3y=-3

x+3y=9

Solve x-3y=-3 for x

Add 3y to both sides

x-3y+3y=-3+3y

x= 3y-3

Substitute 3y-3 for x in x+3y=9

x+3y=9

3y-3+3y=9

Simplify both sides of the equation

6y-3=9

Add 3 to both sides

6y-3+3=9+3

6y=12

Divide both sides by 6

6y/6=12/6

y=2

Substitute 2 for y in x=3y-3

x=3y-3

x= (3)(2)-3

x= 6-3

x= 3

Final answer : X=3, Y=2

I hope that's help !

Have a great Sunday :)

Answer Link

Otras preguntas

Read this passage. “There is a look about you,” he said. “It lies in your eyes and the mark is on your face. What is it?” “Would you not grieve too,” I said, “i

The function in the table is exponential: True False

The search for black holes involves searching for The search for black holes involves searching for Group of answer choices single stars that emit large amounts

What is the amount of solute required if the solution is 50 ml and the solvent is 35 ml. Solve and explain I don’t know what to do

Explain what rusesabagina has trouble unstanding in lines 4-25

Credit terms are terms for a.when payments for merchandise are to be made with cash. b.when the payments for merchandise are to be made. c.when the returns of m

Flint has been assigned the task of reconfiguring all the digital projectors in his office building. He knows Ellie had to do this two years ago, and he remembe

Weathering and erosion are largely responsible for determining ___________. A. the pattern of wind currents B. the shapes and features of landforms C. the heigh

Hi, may someone help me with this question? Thank you!:) “If f(x) = x^2 + 7, find f(x+2)”

chemistry definition of