which of these strategies would eliminate a variable in the system of equations?

2x + 8y = -3

3x + 6y = -4

a: multiply the top equation by 3, multiply the bottom equation by -2, then add the equations.

b: multiply the top equation by 3, multiply the bottom equation by 4, then subtract the bottom equation from the top equation.

c: multiply the top equation by 4, multiply the bottom equation by 3, then add the equations.