Question

4) Efetue as operações dadas: a) 2/3+ 4/5 b) 15/12 - 1/4 c) 1/3 - 1/5 + 1/6

Answer 1

$a) \frac{2}{3} + \frac{4}{5} = \frac{10 + 12}{15} = \frac{22}{15}$

$b) \frac{15}{12} - \frac{1}{4} = \frac{5}{4} - \frac{1}{4} = \frac{5 - 1}{4} = \frac{4}{4} = 1$

$c) \frac{1}{3} - \frac{1}{5} + \frac{1}{6} = \frac{10 - 6 + 5}{30} = \frac{30}{9} = \frac{3}{10} \\ \\ 0.3$

Answer 2

Resposta:

a) 10+12/15

22/15

b)5/4- 1/4

5-1/4

4/4 = 1

c) 10-6+5/30

9/30 = 3/10