Solve for x_0
x_{0}=2625
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x_{0}=\frac{2100}{0.8}
Divide both sides by 0.8.
x_{0}=\frac{21000}{8}
Expand \frac{2100}{0.8} by multiplying both numerator and the denominator by 10.
x_{0}=2625
Divide 21000 by 8 to get 2625.
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