Question

2.) Simplify:
10x + 6y +4x =
x(14) + 6y = 14x +6y

Answer 1

{x,y} = {1,1}

Explanation:

[2] 6y = -14x + 20

[2] y = -7x/3 + 10/3

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

[1] -10x - 6•(-7x/3+10/3) = -16

[1] 4x = 4

// Solve equation [1] for the variable x

[1] 4x = 4

[1] x = 1

// By now we know this much :

x = 1

y = -7x/3+10/3

// Use the x value to solve for y

y = -(7/3)(1)+10/3 = 1

Solution :

{x,y} = {1,1}