Question

What is the value of the x variable in the solution to the following system of equations? 4x + 2y = 12 x – y = 3

Answer 1

x = 3 and y = 0

Explanation:

4x + 2y = 12

x – y = 3

solving substitution method,

x – y = 3

x = 3 + y

substitute this in the first equation

4(3+y) + 2y = 12

12 + 4y + 2y =12

12 + 6y = 12

6y = 12 - 12

6y = 0

y = 0

x = 3 + y

= 3 + 0

= 0

x = 3 and y = 0