Solve for x
x = \frac{4000}{7} = 571\frac{3}{7} \approx 571.428571429
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x=\frac{400}{0.7}
Divide both sides by 0.7.
x=\frac{4000}{7}
Expand \frac{400}{0.7} by multiplying both numerator and the denominator by 10.
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