Đáp án:
Bài 1
a)$\frac{-35}{35}$ =$\frac{40}{35}$ b)$\frac{1}{15}$ =$\frac{95}{y15$ c)$\frac{420}{1800}$ =$\frac{390}{1800}$ d)$\frac{-9}{7}$ =$\frac{14}{7}$
a)$\frac{-36}{63}$ =$\frac{56}{63}$ b)$\frac{81}{216}$ =$\frac{40}{216}$ c)$\frac{1530}{5400}$ =$\frac{-300}{5400}$ d)$\frac{-18}{27}$ =$\frac{-12}{27}$
a)$\frac{-45}{54}$=$\frac{-12}{54}$ b)$\frac{-50}{225}$=$\frac{36}{225}$ c)$\frac{-63}{210}$= $\frac{-50}{210}$ d)$\frac{-54}{792}$= $\frac{-484}{792}$
a)$\frac{-18}{30}$=$\frac{-25}{30}$ b)$\frac{-72}{384}$=$\frac{80}{384}$ c)$\frac{440}{4800}$=$\frac{840}{4800}$ d)$\frac{-90}{60}$=$\frac{220}{60}$
Bài 2
a)$\frac{6}{18}$=$\frac{9}{18}$=$\frac{12}{18}$ b)$\frac{216}{288}$=$\frac{32}{-288}$=$\frac{180}{-288}$ c)$\frac{1188}{1944}$=$\frac{1080}{1944}$=$\frac{-1134}{1944}$
a)$\frac{108}{144}$=$\frac{24}{144}$=$\frac{120}{144}$ b)$\frac{-32}{224}$=$\frac{28}{224}$=$\frac{168}{224}$ c)$\frac{168}{360}$=$\frac{-135}{360}$=$\frac{-240}{360}$
a)$\frac{-81}{486}$=$\frac{210}{486}$=$\frac{-378}{486}$ b)$\frac{50}{150}$=$\frac{-30}{150}$=$\frac{-15}{150}$ c)$\frac{3762}{4356}$=$\frac{3630}{4356}$=$\frac{-3828}{4356}$
