If you’re asking to solve a system of equations, then x=4 and y= 12/5 or 2.4
First Solve 2x+5y=20 for x
Add -5y to each side
2x=5y-20
Divide both sides by 2
x= -5/2y +10
Next substitute -5/2y +10 for y in the equation 6x-5y=12
6(-5/2y+10) -5y=12
-20y+ 60= 12
Then simplify again by adding -60 to each side
-20y= -48
Then divide by -20 on each side
Y= 12/5 (or 2.4)
Now to find x substitute 12/5 for y in x= -5/2y+10
X= -5/2(12/5) +10
X= 4
So X=4 and Y= 12/5 or 2.4
Hope that helped