Solve by Substitution :
// Solve equation [1] for the variable y
[1]
y = x + 12
// Plug this in for variable y in equation [2]
[2] 2•(x +12) + 4x = 27
[2] 6x = 3
// Solve equation [2] for the variable x
[2] 6x = 3
[2] x = 1/2 // By now we know this much :
y = x+12
x = 1/2// Use the x value to solve for y
y = (1/2)+12 = 25/2 Solution :
{y,x} = {25/2,1/2}
y=x+12;4x+2y=27 Solution :
{y,x} = {25/2,1/2}
System of Linear Equations entered : [1] y=x+12
[2] 4x+2y=27
Equations Simplified or Rearranged :
[1] y - x = 12
[2] 2y + 4x = 27
