Solve for x
x = \frac{400000}{3} = 133333\frac{1}{3} \approx 133333.333333333
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0.3x=40000
Combine x and -0.7x to get 0.3x.
x=\frac{40000}{0.3}
Divide both sides by 0.3.
x=\frac{400000}{3}
Expand \frac{40000}{0.3} by multiplying both numerator and the denominator by 10.
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