Question

(2/3+1/4)-(1/10+1/4)

(a) 60/34
(b) 225/16
(c) 0,225
(d) 1,25
(e) 45/16​

Answer 1

Resposta:

$( \frac{2}{3} + \frac{1}{4} ) - ( \frac{1}{10} + \frac{1}{4} ) = \\ ( \frac{8 + 3}{12} ) - ( \frac{2 + 5}{20} ) = \\ \frac{11}{12} - \frac{7}{20} = \\ \frac{55 - 21}{60} = \\ \frac{34 \div 2}{60 \div2 } = \frac{17}{30}$

Explicação passo-a-passo:

mmc (12, 20) = 2².3.5 = 60

12, 20 | 2

6, 10 | 2

3, 5 | 3

1, 5 | 5

1, 1

Answer 2

Resposta:

(2/3+1/4)-(1/10+1/4)

(8/12+3/12)-(2/20+5/20)

11/12-7/20

55/60-21/60

34/60