Question

Whats the answer to

(504-300+800) x 100 / 3?

Answer 1

33433.2

Explanation:

504 - 300 = 204

204 + 800 = 1004

100 / 3 = 33.3

1004 x 33.3 = 33433.2

Answer 2

[1] x - 6y = 3

[2] x + 2y = 5

Graphic Representation of the Equations :

-6y + x = 3 2y + x = 5

Solve by Substitution :

// Solve equation [2] for the variable x

[2] x = -2y + 5

// Plug this in for variable x in equation [1]

[1] (-2y+5) - 6y = 3

[1] - 8y = -2

// Solve equation [1] for the variable y

[1] 8y = 2

[1] y = 1/4

// By now we know this much :

x = -2y+5

y = 1/4

// Use the y value to solve for x

x = -2(1/4)+5 = 9/2

Solution :

{x,y} = {9/2,1/4}