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

{x,y} = {1,1}

Step-by-step 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}

See below.

Step-by-step explanation:

Step 1 6x + 2 = 6 - 3x    Distributive property of multiplication over addition

Step 2 2 = 6 - 9x    Subtraction property of equality

Step 3 -4 = -9x    Subtraction property of equality

Step 4 4/9 = x    Division property of equality

Step 5 x = 4/9   Symmetric property of equality