Answer:
X=10, y=5
Step-by-step explanation:
3x-2y=20 .... equation 1
3x-5y=5 ...... equation 2
subtract equation 1 from 2
automatically 3x will cancel out
-2y-(-5y)=20-5
-2y+5y=15
3y=15
y=5
sub 5 for y in eqn 1
3x-10=20
3x=30
x=10
