Question

Se x = 1,333 e y = 0,1666 entao x + y e igual a ? Represente o resultado em fracao

Answer 1

x = 1,3333        y = 0,1666
x + y = 1,3333 + 0,1666
x + y = 1,4999

a  = 1,4999          10a = 14,999      100a = 149,999
100a - 10a = 149,999 - 14,999
90a = 135
a = 135 / 90 

135 ÷ 45      3
------------ = --------
90 ÷  45       2

Outra forma:
x = 1,333     10x = 13,333
10x - x = 13,333 - 1,333
9x = 12
x = 12/9  ⇒ 4/3
1,333 = 4/3

y = 0,1666      10y = 1,666      100y = 16,666
100y - 10 y = 16,666 - 1,666
90y = 15
y = 15/90 ⇒1/6

x + y = 4/3 + 1/6
4/3 + 1/6 = mmc 6

8/6 + 1/6 = 9/6
9/6 = 3/2