Answer:
Step-by-step explanation:
We can see the coefficients of y are same in number but have opposite signs.
We need to add equations, this will eliminate y:
- 2x + 6x = 7 + 5
- 8x = 12
- x = 12/8
- x = 1.5
Now find the value of y:
- 2(1.5) + 0.5y = 7
- 3 + 0.5y = 7
- 0.5y = 4
- y = 4/0.5
- y = 8
