Thực hiện các phép tính
a) \(25\%-\frac{5}{4}+1\frac{5}{6}\)
b) \(75\%:2\frac{1}{5}-\left(0,5\right)^2.\left(-7\right)+2,5\left(7\frac{2}{3}-5\frac{2}{3}\right)\)
c) \(45:2\frac{4}{7}+50\%-1,25\)
d) \(350\%:\frac{105}{24}+4\frac{5}{6}:2-\left(0,5^2\right).30\%\)
e) \(4\frac{2}{5}.0,5-1\frac{3}{7}.14\%+\left(-0,8\right)\)