Question

срочно,помогите!прошу

Answer 1

$( \frac{1}{3}) {}^{ - 1} - ( - \frac{6}{7} ) {}^{0} + ( \frac{1}{2} ) {}^{2} \div 2 = 3 - 1 + \frac{1}{4} \times \frac{1}{2} = 2 + \frac{1}{8} = \frac{17}{8}$