Solve for η
\eta =\frac{65}{102}\approx 0.637254902
Assign η
\eta ≔\frac{65}{102}
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\eta =\frac{6.5}{1.02\times 10}
Cancel out 10^{13} in both numerator and denominator.
\eta =\frac{6.5}{10.2}
Multiply 1.02 and 10 to get 10.2.
\eta =\frac{65}{102}
Expand \frac{6.5}{10.2} by multiplying both numerator and the denominator by 10.
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