Explicație pas cu pas:
( 2 / 3 + 5 / 9 - 2 7 / 12 ) · ( - 7 1 / 5 ) =
= ( 2 / 3 + 5 / 9 - 31 / 12 ) · ( - 36 / 5 )
= ( 24 / 36 + 20 / 36 - 93 / 36 ) · ( - 36 / 5 )
= ( - 49 / 36 ) · ( - 36 / 5 )
= + 49 · 1 / 5
= 49 / 5
(¹²⁾2/3 + ⁴⁾5/9 - ³⁾31/12)×( - 36/5) =
= (24 + 20 - 93)/36 × - 36/5
= - 49/36 × - 36/5
= 49/5
