Question

Please answer it i am giving 20 points
Very urgent please

Answer 1

$= \frac{1}{2} + \frac{3}{7} - 1\frac{1}{4} - 2\frac{1}{2} \\ \\ = \frac{7 + 6}{14} - \frac{5}{4} - \frac{5}{2} \\ \\ = \frac{12}{14} - \frac{10 - 20}{8} \\ \\ = \frac{6}{7} - \frac{30}{8} \\ \\ = \frac{48 - 210}{56} \\ \\ = \frac{ - 162}{56} \\ \\ = 2\frac{50}{56} \: answer$