Solve for M_1
M_{1}=0.07
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50M_{1}=0.1\times 35
Multiply 2 and 25 to get 50.
50M_{1}=3.5
Multiply 0.1 and 35 to get 3.5.
M_{1}=\frac{3.5}{50}
Divide both sides by 50.
M_{1}=\frac{35}{500}
Expand \frac{3.5}{50} by multiplying both numerator and the denominator by 10.
M_{1}=\frac{7}{100}
Reduce the fraction \frac{35}{500} to lowest terms by extracting and canceling out 5.
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