Обчислити:
12 + (-20) – (-11) + 18 – (-6) -10;
б) 3 5/12-(-1 1/3) +(-3/8)-5 5/6.
12 + (-20) – (-11) + 18 – (-6) -10;
б) 3 5/12-(-1 1/3) +(-3/8)-5 5/6.
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Ответ:
2)12+(-20)-(-11)-(-6)-10=
12-20+11+6-10=29-30=-1
3)3 5/12-(-1 1/3)+(-4 3/8)=
3 5/12+1 1/3-4 3/8=
10/24+8/24-9/24=18/24-9/24=9/24=3/8
Пошаговое объяснение: