Question

Sabendo que a = 3 1/4 - 5/3 e b - 1 2/3 - 1/2, calcule a + b

Answer 1

resposta 10,65

a: 31/4= 7,75

5/3= 1,6

A= 6,15

B: 12/3 = 4

1/2= 0,5

B= 4,5

B + A = 6,15 + 4,5 = 10,65

Answer 2

Se eu entendi, temos:

$3 \frac{1}{4} - \frac{5}{3} = \frac{13}{4} - \frac{5}{3} = \frac{39 - 20}{12} = \frac{19}{12} = a$

$- 1 \frac{2}{3} - \frac{1}{2} = - \frac{5}{2} - \frac{1}{2} = - \frac{6}{2} = -3 = b$

a + b =

$\frac{19}{12} + ( - 3) = \frac{19}{12} - 3 = \frac{19}{12} - \frac{36}{12} = - \frac{17}{12}$