Question

What is the result of adding the system of equations? 2x + y = 4
3x - y = 6
A.x=2
B.x=10
C.5x=10

Answer 1

just set it up like your average addition problem:

   2x + y = 4
+ 3x - y = 6

then add one term at a time; work from left to right.

5x = 10 is your result. your y's cancel out.