1. a). sumę liczb 2 2/5 i 8 4/7 zmniejsz o 10 1/2
b). Różnicę liczb 25 1/4 i 3 1/8 powieksz o 1 5/6
a) ( 2 2/5 + 8 4/7 ) - 10 1/2 =
= ( 10 + 14/35 + 20/35 ) - 10 1/2 =
= ( 10 + 34/35 ) - 10 1/2 =
= 68/70 - 35/70 = 33/70
===========================
b)
( 25 1/4 - 3 1/8 ( + 1 5/6 =
= ( 25 2/8 - 3 1/8 ) + 1 5/6 =
= 22 1/8 + 1 5/6 = 22 3/24 + 1 20/24 =
= 23 23/24
===========================================
a) (2 i2/5 + 8 i4/7) - 10 i1/2 = 2i14/35 +8 i20/35) - 10 1/2= 10 i 34/35-10 i 1/2 = 10 i 68/70 - 10 i 35/70 = 33/70
b) ( 25 i1/4 - 3 i 1/8) + 1 i 5/6 = ( 25 i 2/8 - 3 i1/8) +1 i5/6= 22 i1/8 + 1 i 5/6 =
= 22 i 3/24 + 1 i 20/24 = 23 i 23/24
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a) ( 2 2/5 + 8 4/7 ) - 10 1/2 =
= ( 10 + 14/35 + 20/35 ) - 10 1/2 =
= ( 10 + 34/35 ) - 10 1/2 =
= 68/70 - 35/70 = 33/70
===========================
b)
( 25 1/4 - 3 1/8 ( + 1 5/6 =
= ( 25 2/8 - 3 1/8 ) + 1 5/6 =
= 22 1/8 + 1 5/6 = 22 3/24 + 1 20/24 =
= 23 23/24
===========================================
a) (2 i2/5 + 8 i4/7) - 10 i1/2 = 2i14/35 +8 i20/35) - 10 1/2= 10 i 34/35-10 i 1/2 = 10 i 68/70 - 10 i 35/70 = 33/70
b) ( 25 i1/4 - 3 i 1/8) + 1 i 5/6 = ( 25 i 2/8 - 3 i1/8) +1 i5/6= 22 i1/8 + 1 i 5/6 =
= 22 i 3/24 + 1 i 20/24 = 23 i 23/24