а)-3.6-12/5/240:10 6)-0,79-(-3)6 2) 4x.(0,1)y g)-(-7x+3y-2z) 2)-(2+7x)+(3-2y) 22 23 X:(-46/9

а) \[ -3 \cdot 6 \cdot 12 : \frac{5}{24}a : 10 = -18 \cdot 12 \cdot \frac{24}{5}a : 10 = -216 \cdot \frac{24}{5}a : 10 = -\frac{5184}{5}a : 10 = -\frac{5184}{5}a \cdot \frac{1}{10} = -\frac{5184}{50}a = -\frac{2592}{25}a = -103.68a\] б) \[ -0.7a \cdot (-3)b = 2.1ab\] в) \[ 4x \cdot (-0.1)y = -0.4xy\] г) \[ -(-7x + 3y - 2z) = 7x - 3y + 2z\] д) \[ -(2 + 7x) + (3 - 2y) = -2 - 7x + 3 - 2y = -7x - 2y + 1\] е) \[\frac{22}{23} : (-\frac{11}{46}) = \frac{22}{23} \cdot (-\frac{46}{11}) = -\frac{22 \cdot 46}{23 \cdot 11} = -\frac{2 \cdot 2}{1 \cdot 1} = -4\]