(6_5/8-1/2)-(5_3/4-2_1/6)+(9_5/8-7_1/3-1_1/3) пожалуйста и срочно

1) $\frac{53}{8} - \frac{1}{2} = \frac{53-4}{8} = \frac{49}{8}$

2) $\frac{23}{4} - \frac{13}{6} = \frac{69-26}{12} = \frac{43}{12}$

3) $\frac{77}{8} - \frac{22}{3} - \frac{4}{3} = \frac{231-176-32}{24} = \frac{23}{24}$

4) $\frac{49}{8} - \frac{43}{12} + \frac{23}{24} = \frac{147-86+23}{24} = \frac{84}{24} =3 \frac{12}{24} = 3,5$