Question

Simplifique as frações
a) 45/63.
b) 75/30.
c) 42/105.

Answer 1

a) 45/63. :(9/9) = 5/7

b) 75/30. :(15/15) = 5/2

c) 42/105. :(21/21)= 2/5

Answer 2

a) mdc(45,63)=9

$\frac{45 \div 9}{63 \div 9} = \frac{5}{7}$

b) mdc(75,30)=15

$\frac{75 \div 15}{30 \div 15} = \frac{5}{2}$

c) mdc(42,105)=21

$\frac{42 \div 21}{105 \div 21} = \frac{2}{5}$