Răspuns:
167 / 30 ; 2006 / 495
Explicație pas cu pas:
a. 2 , ( 4 ) + 3 , 1( 2 ) =
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2, ( 4 ) = 2 intregi 4 / 9 = ( 2 x 9 + 4 ) / 9 = 22 / 9
3 , 1( 2 ) = ( 312 - 31 ) / 90 = 281 / 90
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22 / 9 + 281 / 90 =
= 220 / 90 + 281 / 90
= 501 / 90
= 167 / 30 ( am simplificat fractia cu 3 )
b. 0 , ( 25 ) + 3 , 4( 5 ) =
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0 , ( 25 ) = 25 / 99
3 , 4 ( 5 ) = ( 345 - 3 ) / 90 = 342 / 90 = 19 / 5
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25 / 99 + 19 / 5 =
= 125 / 495 + 1881 / 495
= 2006 / 495
