Question

mim ajude por favor mim ajude

Answer 1

a) $\frac{69}{70} *\frac{52}{18} = \frac{3588}{1260} =\frac{1794}{630} =\frac{897}{315} = \frac{299}{105}$

b) $\frac{81}{52} *\frac{26}{117}= \frac{2106}{6084} =\frac{1053}{3042}=\frac{351}{1014}= \frac{117}{338} =\frac{9}{26}$

c)$\frac{9}{28}*\frac{49}{15} = \frac{441}{420}=\frac{147}{140}=\frac{21}{20}$

d) $\frac{9}{35} *\frac{30}{9} =\frac{270}{315} =\frac{90}{105}=\frac{30}{35} =\frac{6}{7}$

e)$\frac{84}{165}*\frac{7}{12}*\frac{99}{189}= \frac{58212}{374220}=\frac{19404}{124740} =\frac{9702}{62370}=\frac{4851}{31185}=\frac{1617}{10395} =\frac{539}{3465} =\frac{77}{495}=\frac{7}{45}$

f) $\frac{7}{1}*\frac{69}{70}*\frac{52}{18}=\frac{25116}{1260} = \frac{12558}{630}=\frac{6279}{315}=\frac{2093}{105}=\frac{299}{15}$