Question

Oblicz
a)5/7+1/7+3/5
b) (1/10+4/5)+2
c)3/3/4+4/3/5
d)4/1/2+1/3/20
e)1/6+1/8+1/12
f)(1+3/4)+(1/4+3/4)
g)3/4+(6/10+4/5)
h)1/1/2+2/2/3+3/3/4
plisssssssss

Answer 1

a) 5/7 + 1/7 + 3/5 = 25/35 + 5/35 + 21/35 = 51/35 = 1 16/35

b)  ( 1/10 + 4/5 ) + 2 = (1/10 + 8/10) + 2 = 9/10 + 2 = 2 9/10

c) 3  3/4 + 4 3/5 = 3 15/20 + 4 12/20 = 7 27/20 = 8 7/20

d) 4 1/2 + 1 3/20 = 4 10/20 + 1 3/20= 5 13/20

e) 1/6 + 1/8 + 1/12 = 4/24 + 3/24 + 2/24 = 9/24 = 3/8

f) (1 + 3/4) + (1/4 + 3/4) = 1 3/4 + 4/4 = 1 7/4 = 2  3/4

g) 3/4 + (6/10 + 4/5) = 3/4 + (6/10 + 8/10) = 3/4 + 14/10= 15/20 + 24/20 = 39/20= 1 19/20

h) 1 1/2 + 2 2/3 + 3 3/4 = 1 6/12 + 2 4/12 + 3 9/12 = 6 19/12 = 7 7/12

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