Evaluate: 7/8-1/10-2/3

Expression: $\frac{7}{8}-\frac{1}{10}-\frac{2}{3}$

Apply the fraction rule $\frac{a}{c}-\frac{b}{c}=\frac{a-b}{c}$

$=\frac{105-12-80}{120}$

Subtract the numbers: $ 105-12-80=13$

$=\frac{13}{120}$