Вычислите: 2) 4/45 : (12/25-4/15)+15/16*4/15

1) [latex] \frac{12}{25}- \frac{4}{15} = \frac{36-20}{75}= \frac{16}{75} [/latex] 2) [latex] \frac{4}{45}: \frac{16}{75}= \frac{4*75}{45*16}= \frac{1*5}{3*4} = \frac{5}{12} [/latex] 3) [latex] \frac{15}{16}* \frac{4}{15} = \frac{15*4}{16*15}= \frac{1}{4} [/latex] 4) [latex] \frac{5}{12}+ \frac{1}{4}= \frac{5+3}{12}= \frac{8}{12} = \frac{2}{3} [/latex]