Solve the system of linear equations by elimination. Check your solution.

x = 3

y = -1

Step-by-step explanation:

(x-y) + (x+y) = 4 + 2

2x = 6

x = 3

sub x=3 into x+y=2

3+y=2

y=2-3

y=-1

Check by subbing x=3 and y=-1 into x-y=4

(3)-(-1) = 3+1 = 4

step-by-step explanation:

this is not possible to solve with the info given.   you need at least an one angle somewhere.

a. she will receive a refund of $278.

step-by-step explanation: