Question

Anybody good at math?

1) 2x + 8y = 20
y=2​

Answer 1

Explanation:

Answer 2

2x+8y=20;y=2

Solution :

{x,y} = {2,2}

System of Linear Equations entered :

[1] 2x + 8y = 20

[2] y = 2

Graphic Representation of the Equations :

8y + 2x = 20 y = 2

Solve by Substitution :

// Solve equation [2] for the variable y

[2] y = 2

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

[1] 2x + 8•(2) = 20

[1] 2x = 4

// Solve equation [1] for the variable x

[1] 2x = 4

[1] x = 2

// By now we know this much :

x = 2

y = 2

We are done

Solution :

{x,y} = {2,2}

Explanation: