В1) Найдите значение a) -8\frac{7}{30}+5\frac{7}{15}-6\frac{11}{30}+4\frac{7}{15}+6\frac{1}{15} = 4\frac{4}{30} д) -8⋅(-1,5)⋅125⋅(-2)= 6) 4,23-3,24-8,437 +3,24-4,23= г) -3,84⋅2,36+7,64⋅(-3,84) = д) (-\frac{2}{9}+3\frac{1}{18})⋅18=

a) \[-8\frac{7}{30}+5\frac{7}{15}-6\frac{11}{30}+4\frac{7}{15}+6\frac{1}{15} = -8\frac{7}{30} - 6\frac{11}{30} + 5\frac{7}{15} + 4\frac{7}{15} + 6\frac{1}{15} = -14\frac{18}{30} + 9\frac{15}{15} = -14\frac{3}{5} + 10 = -4\frac{3}{5} = -4.6\]

д) \[-8 \cdot (-1.5) \cdot 125 \cdot (-2) = 12 \cdot 125 \cdot (-2) = 1500 \cdot (-2) = -3000\]

б) \[4.23 - 3.24 - 8.437 + 3.24 - 4.23 = (4.23 - 4.23) + (3.24 - 3.24) - 8.437 = 0 + 0 - 8.437 = -8.437\]

г) \[-3.84 \cdot 2.36 + 7.64 \cdot (-3.84) = -3.84 \cdot (2.36 + 7.64) = -3.84 \cdot 10 = -38.4\]

д) \[(\frac{-2}{9} + 3\frac{1}{18}) \cdot 18 = (\frac{-4}{18} + \frac{55}{18}) \cdot 18 = \frac{51}{18} \cdot 18 = 51\]