Solve for b
b = \frac{10}{7} = 1\frac{3}{7} \approx 1.428571429
Assign b
b≔\frac{10}{7}
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b=10-\frac{2\times 30}{7}
Express 2\times \frac{30}{7} as a single fraction.
b=10-\frac{60}{7}
Multiply 2 and 30 to get 60.
b=\frac{70}{7}-\frac{60}{7}
Convert 10 to fraction \frac{70}{7}.
b=\frac{70-60}{7}
Since \frac{70}{7} and \frac{60}{7} have the same denominator, subtract them by subtracting their numerators.
b=\frac{10}{7}
Subtract 60 from 70 to get 10.
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