To solve this question using the addition/elimination method, follow the steps below.
Step 01: Multiply the first equation by 2.

Step 02: Add both equations to eliminate y.

Step 03: Isolate x in the equation above.
To do it, divide both sides by 7.

Step 04: Choose one equation to substitute x by 1 and find y.
Choosing the first equation:

Subtracting 5 from both sides, then dividing both sides by -2:

Answer:
x = 1.
y = 1.