a) (-3)(-2)-3(-4)-5(-8) = 6 - (-12) + 40 = 58б) (-2 3/6-8)(-2 7/9)-(-2)4 = (-2.5 - 8)(-2.7778) - (-2)4 = (-10.5)(-2.7778) + 8 = 29.1663
a) -5:(-7) = 5/7б) 3,4:(6/10) = 3.4 / 0.6 = 5.67
a) (-3)(-2)-3(-4)-5(-8) = 6 - (-12) + 40 = 58
б) (-2 3/6-8)(-2 7/9)-(-2)4 = (-2.5 - 8)(-2.7778) - (-2)4 = (-10.5)(-2.7778) + 8 = 29.1663
a) -5:(-7) = 5/7
б) 3,4:(6/10) = 3.4 / 0.6 = 5.67