Answer:{x,y} = {6,5} Step-by-step explanation: 3x + y = 23
3x - 2y = 8 Solve by Substitution :
// Solve equation [1] for the variable y
y = -3x + 23
// Plug this in for variable y in equation
3x - 2•(-3x+23) = 8
9x = 54
// Solve equation [2] for the variable x
9x = 54
[ x = 6 // By now we know this much :
x = 6
y = -3x+23
// Use the x value to solve for y
y = -3(6)+23 = 5 Solution :
{x,y} = {6,5}