Answer:
y = 250
Step 1:
To solve, we plug in 50x for y.
Then, we subtract the 10x from the right side. Our goal is to get the x by itself first.
Then, we divide both sides by 40, since we have to get the x by itself.
x = 5
Step 2:
Now that we found x, we plug in 5 to the original equation and solve from there.
y = 250