б) 31/3 - 11/2 + 19/8 = 248 - 132 +57 / 24 = 173 / 24
е) = - 1,7
ж) = - 21,3
з) = - 4,2
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б) 31/3 - 11/2 + 19/8 = 248 - 132 +57 / 24 = 173 / 24
е) = - 1,7
ж) = - 21,3
з) = - 4,2