раскройте скобки и найдите значение выражения
1) 9,38 - (-10 + 5,38)
2) -8,76 - (-3,25 - 10,76)
3) -6,19 + (-1,5 + 5,19)
4) -(-21,4 + 12,7) + (-20,4 + 12,7)
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