Пошаговое объяснение:
(4 3/4-2 3/8×6 5/9):15,58=
(19/4-19/8×59/9):15 58/100=
=(19/4-1121/72):15 58/100=
=(342-1121)/72:1558/100=
= - 779/72×100/1558= - 25/36
5 3/8×(-2 2/215)+(4 4/5-10 2/7):2 34/175=
=43/8×(-432/215)+(24/5-72/7):384/175=
= - 2322/215+((168-360)/35)×175/384=
= - 2322/215+(-192/35)×175/384=
= - 2322/215+(-5/2)= - 2322/215-5/2=
= (-4644-1075)/430= - 5719/430=
= - 133/10= - 13,3
