Question

Oblicz 1 3/8 - 2 1/6 b 3 3/8 +2 5/6 c 1/2 -(1/6-1/3) d 7/6 + (-5/4 - 4/3) e -(-2 2/3) + 7/15) f -1 9/16 + 11/12 g 1 5/8 - (-2 2/3 + 0,25) h 1 2/5 - 3 7/8 -0,125 i 1/2 - 1/3 - (1/4-1/5)

Answer 1

1 3/8 - 2 1/6 = 1 9/24 - 2 4/24 = -1 5/24

 3 3/8 +2 5/6 = 3 9/24 + 2 20/24 = 6 5/24

 1/2 -(1/6-1/3) 1/2- (1/6 - 2/6) = 1/2 - (-1/2)=1/2 + 1/2 = 1

 7/6 + (-5/4 - 4/3) = 7/6 + (-15/12 - 16/12) = 7/6 + (-31/12) = 14/12 - 31/12 = -17/12

 -(-2 2/3) + 7/15) = ? źle spisałeś ?

 -1 9/16 + 11/12= -1 54/96 + 88/96 = -62/96

 1 5/8 - (-2 2/3 + 0,25) = 1 5/8 - (2 8/12 + 4/12) = 1 5/8 - 2 4/12= 1 15/24 - 2 8/24= - 1 7/24

 1 2/5 - 3 7/8 -0,125 = 1 400/1000 - 3 875/1000 - 125/1000= - 2 476/1000 - 125/1000 = - 2 601/1000

 1/2 - 1/3 - (1/4-1/5)= 1/2 - 1/3 - (5/20 - 4/20)= 1/2 - 1/3 - 1/20 = 30/60 - 20/60 - 3/60 = 7/60 

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