Solve for y
y=4000
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0=40000-10y
Calculate 200 to the power of 2 and get 40000.
40000-10y=0
Swap sides so that all variable terms are on the left hand side.
-10y=-40000
Subtract 40000 from both sides. Anything subtracted from zero gives its negation.
y=\frac{-40000}{-10}
Divide both sides by -10.
y=4000
Divide -40000 by -10 to get 4000.
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