Question

Să se calculeze ( simplificând rezultatele)
a) 1 / 123+4/88+3/99+6/72=
b) 8/75+7/45+6/675+4/225=
c) 1/39+4/117+6/169=
d) 31/144+1/120+19/720


Va rog este urgent

Answer 1

a)

$\frac{1}{123} + \frac{1}{22} + \frac{1}{33} + \frac{1}{12} = \frac{44 + 246 + 164 + 451}{5412} = \frac{905}{5412}$

b)

$\frac{8}{75} + \frac{7}{45} + \frac{2}{225} + \frac{4}{225} = \frac{13}{45}$