Question

Efectuează înmulțirile:
a) 3• 2 supra 7
b)4• 7 supra 31
c)5• 11 supra 78
d)7• 13 supra 99

Answer 1

$a) \: \frac{3 \times 2}{7} = \frac{6}{7} \\ b) \: \frac{4 \times 7}{31} = \frac{28}{31} \\ c) \: \frac{5 \times 11}{78} = \frac{55}{78} \\ d) \: \frac{7 \times 13}{99} = \frac{91}{99}$

Answer 2

$a)3*\frac{2}{7}=\frac{3*2}{7}=\frac{6}{7}$

$b)4*\frac{7}{31}=\frac{4*7}{31}=\frac{28}{31}$

$c)5*\frac{11}{78}=\frac{5*11}{78}=\frac{55}{78}$

$d)7*\frac{13}{99}=\frac{7*13}{99}=\frac{91}{99}$