Răspuns
17 / 35
Explicație pas cu pas:
( 3 1 / 5 - 2 1 / 2 ) : ( 1 1 / 6 + 2 1 / 3 ) =
= [ ( 3 x 5 + 1 ) / 5 - ( 2 x 2 + 1 ) / 2 ] : [ ( 1 x 6 + 1 ) / 6 + ( 2 x 3 + 1 ) / 3 ]
= [ ( 15 + 1 ) / 5 - ( 4 + 1 ) / 2 ] : [ ( 6 + 1 ) / 6 + ( 6 + 1 ) / 3 ]
= [ ( 16 / 5 ) - ( 3 / 2 ) ] : [ ( 7 / 6 ) + ( 7 / 3 ) ]
= ( 32 - 15 ) / 10 : ( 7 + 14 ) / 6
= 17 / 10 : 21 / 6
= 17 / 10 x 6 / 21
= 17 / 10 x 2 / 7
= 17 / 5 x 1 / 7
= 17 / 35
