Question

What is the value of x in the solution to the following system of equations?

x − y = −3
x + 3y = 5

Answer for Blank 1:

Answer 1

x − y = −3
x + 3y = 5
-------------------subtract
-4y = - 8
y = 2

substitute y = 2 into x − y = −3 to find x

x − y = −3
x − 2 = −3
x = -1

answer
x = -1 and y = 2