Пошаговое объяснение:
а)
4 3/7×7 4/9 - 4 3/7×6 4/9=
=4 3/7(7 4/9-6 4/9)=4 3/7×1=4 3/7
б)
3 3/23×1 1/6+3 3/23×1 5/6)=
=3 3/23(1 1/6+1 5/6)=3 3/23×3=72/23×3=
=216/23=9 9/23
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Verified answer
Пошаговое объяснение:
а)
4 3/7×7 4/9 - 4 3/7×6 4/9=
=4 3/7(7 4/9-6 4/9)=4 3/7×1=4 3/7
б)
3 3/23×1 1/6+3 3/23×1 5/6)=
=3 3/23(1 1/6+1 5/6)=3 3/23×3=72/23×3=
=216/23=9 9/23