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b.)-20.2
liczyłem na kalkulatorze do ułamków więc jest chyba OK ;)
=(-18/24)-212/24-33/24=(-263/24)=(-10 23/24)
b. (-14 1/2)+(-7 3/5)+(+8 1/5)+(-6,3)=(-29/2)- 38/5+ 41/5- 63/10=
=(-145/10)-76/10+82/10-63/10=(-284/10)+82/10=(-20,2)
(-3/4)-53/6- 11/8=
(-18/24)-212/24-33/24=
(-263/24)=(-10 23/24)
b. (-14 1/2)+(-7 3/5)+(+8 1/5)+(-6,3)=
(-29/2)- 38/5+ 41/5- 63/10=
(-145/10)-76/10+82/10-63/10=
(-284/10)+82/10=(-20,2)