Solve the system of equations
-2x + y = 0
10x + 7y = 48
Since the first equation is equal to 0, it's easier to solve it for y and substitute in the second equation:
y = 2x
Substituting in the second equation:
10x + 7(2x) = 48
Operating:
10x + 14x = 48
Joining like terms:
24x = 48
Dividing by 24:
x = 48/24
x = 2
Now since y = 2x,
y = 2*2 = 4
y = 4
Solution: x=2, y=4