How to solve for 3x y=23

3x-2y=8

{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}