Question

Sendo

a + 3$\frac{1}{4} - \frac{5}{3}$ e b = 1$\frac{2}{3} - \frac{1}{2}$ , calcule a + b

Answer 1

Oi Ingledys

a = 3 1/4 - 5/3 = (3*4 + 1)/4 - 5/3 = 13/4 - 5/3 = 39/12 - 20/12 = 19/12

b = 1 2/3 - 1/2 = (1*3 + 2)/3 - 1/2 = 5/3 - 1/2 = 10/6 - 3/6 = 7/6 

a + b = 19/12 + 7/6 = 19/12 + 14/12 = 33/12 = 11/4

Answer 2

3 inteiros 1/4 = ( 3 * 4) + 1 = 13/4 ***
1 inteiro 2/3 = ( 3 * 1 ) + 2 = 5/3 ****
reescrevendo

a = 13/4 - 5/3 
mmc = 12
( 39 - 20)/12 = 19/12 ***** ( valor de a)

b = 5/3 - 1/2
mmc = 6
( 10 - 3)/6 = 7/6 *****(valor de b )
a + b = 19/12 + 7/6 = 
mmc = 12
( 19 + 14)/12  = 33/12 = 11/4 = 2 int  3/4 = *****