Помогите решить, даю 80 баллов! Задачи ** картинке

Question 1

Помогите решить, даю 80 баллов! Задачи на картинке

Question 2

A)
1) $\frac{2}{15}+1 \frac{7}{12} = \frac{8}{60}+1 \frac{35}{60} =1 \frac{43}{60}$
2) $1 \frac{43}{60} * \frac{30}{103}= \frac{103}{60}* \frac{30}{103}= \frac{1}{2}$
3) $2:2 \frac{1}{4}* \frac{9}{32}= 2: \frac{9}{4}* \frac{9}{32}= \frac{2*4*9}{9*32}= \frac{1}{4}$
4) $\frac{1}{2}- \frac{1}{4} = \frac{2}{4}- \frac{1}{4}= \frac{1}{4}$
5) $\frac{1}{4} +2 \frac{1}{3}=2 + \frac{3}{12}+ \frac{4}{12} =2 \frac{7}{12}$
б) 1) $7 \frac{1}{2} *2 \frac{2}{3} = \frac{15}{2}* \frac{8}{3}=20$
2) $12 \frac{1}{4}: \frac{7}{9}= \frac{49}{4} * \frac{9}{7} = \frac{63}{4}$ $=15,75$
3)20 - 15,75 = 4,25
4) $4,25:6 = 4 \frac{1}{4}:6= \frac{17}{4} * \frac{1}{6} = \frac{17}{24}$
5) $\frac{17}{24}+3 \frac{1}{8} +5 \frac{2}{7} =(3+5) + \frac{119+21+48}{168}=8 \frac{188}{168} =9 \frac{20}{168} =9 \frac{5}{42}$
в) 1) $5 \frac{1}{3} :6 \frac{2}{5} = \frac{16}{3} : \frac{32}{5}= \frac{16}{3}* \frac{5}{32}= \frac{5}{6}$
2) $12:3 \frac{3}{5}= \frac{12}{1} * \frac{5}{18} = \frac{10}{3}$
3) $\frac{10}{3}- \frac{2}{3}= \frac{8}{3}$
4) $\frac{8}{3}* \frac{2}{3}= \frac{16}{9}=1 \frac{7}{9}$
5) $\frac{5}{6} +1 \frac{7}{9} +7 \frac{2}{5}=(1+7)+ \frac{75+70+36}{90}=8 \frac{181}{90}=9 \frac{1}{90}$
г) 1) $3 \frac{15}{28} : \frac{9}{28}= \frac{99}{28}* \frac{28}{9} = 11$
2) $1:1 \frac{10}{49}=1* \frac{49}{10}=4,9$
3) 11 - 4,9 = 6,1
4) $\frac{2}{5} *6,1:2=0,4*6,1 :2=2,44:2= 1,22$
5) $21 \frac{2}{59}- 1,22= 20 \frac{2}{59}- \frac{22}{100}=20 \frac{2}{59}- \frac{11}{50}=20 \frac{100}{2950} - \frac{649}{2950}=19 \frac{3050}{2950}- \frac{649}{2950}$ $=19 \frac{2401}{2950}$