Does this problem come with a second equation? If there are two variables, you need at least two equations to be able to find the value of each variable.
Assuming your two equations are 2x+3y=12 and 6x+4y=12 then you would do the following to solve for x and y:
2x+3y=12 & 6x+4y=12
subtract 2x from both sides 2x+3y -2x = 6x+4y -2x
subtract 4y from each side 3y -4y= 4x+4y -4y
-y = 4x
multiply each side by negative one (-1)*-y = (-1)*4x
input the y value into the original equation 2x+3(-4x)=12
now input your x value into the original equation to solve for y
x= -6/5 y= 24/5
if you put both the x and y values into the equation 2x+3y or 6x+4y they will both equal 12
Cyrstal G. is correct. You should have two equations and then you will be able to solve.