Question

Сократите дроби.
1)60/108•72/900
2)48m^3n^2/32mn^3
3)35•14+35•70/42•70
4)a^2+12a/24a

Answer 1

1) $\frac{60*72}{108*900} =\frac{72}{108*15}=\frac{2}{3*15} = \frac{2}{45}$

2) $\frac{48m^{3}n^{2} }{32mn^{3} } = \frac{48m^{2} }{32n}=\frac{3m^{2} }{2n}$

3) $\frac{35*14+35*70}{42*70}= \frac{35*(14+70)}{42*70} =\frac{35*84}{24*70}=\frac{84}{42*2} =\frac{2}{2}= 1$

4) $\frac{a^{2}+12a }{24a} = \frac{a*(a+12)}{24a} =\frac{a+12}{24}$

Пошаговое объяснение: