Question

simplifique as frações até torná-las irredutíveis

a) 4/10
b) 21/6
c) 15/12
d) 30/45
e) 35/15
f) 200/180
g) 70/35
h) 48/8

Answer 1

a)

$\frac{4}{10} = \frac{4 \div 2}{10 \div 2} = \frac{2}{5}$

b)

$\frac{21}{6} = \frac{21 \div 3}{6 \div 3} = \frac{7}{2}$

c)

$\frac{15}{12} = \frac{15 \div 3}{12 \div 3} = \frac{5}{4}$

d)

$\frac{30}{45} = \frac{30 \div 15}{45 \div 15} = \frac{2}{3}$

e)

$\frac{35}{15} = \frac{35 \div 5}{15 \div 5} = \frac{7}{3}$

f)

$\frac{200}{180} = \frac{200 \div 40}{180 \div 40} = \frac{5}{3}$

g)

$\frac{70}{35} = \frac{70 \div 35}{35 \div 35} = \frac{2}{1} = 2$

h)

$\frac{48}{8} = \frac{48 \div 8}{8 \div 8} = \frac{6}{1} = 6$

Answer 2

a) 4/10 ÷ 2 = 2/5

b) 21/6 ÷ 3 = 7/3

c) 15/12 ÷ 3 = 5/4

d) 30/45 ÷ 5 = 6/9 ÷ 3 = 3/3 = 1

e) 35/15 ÷ 5 = 7/3

f) 200/180 ÷ 10 = 20/18 ÷ 2 = 10/9

g) 70/35 ÷ 7 = 10/5 ÷ 5 = 2/1

h) 48/8 ÷ 8 = 6/1