[tex]6)\; \; \frac{x+y}{z}=\frac{-0,7-2,25}{-0,6}=\frac{2,95}{0,6}=\frac{295}{60}=4\frac{11}{12}\\\\\frac{a-x}{ax}=\frac{1,2+0,3}{1,2\cdot (-0,3)}=-\frac{1,5}{0,36}=-\frac{150}{36}=-4\frac{1}{6}\\\\8)\; \; -5\cdot 3^3=-5\cdot 27=-135\\\\0,01\cdot (-3)^4=0,01\cdot 81=0,81\\\\1-5\cdot 0,4^2=1-5\cdot 0,16=1-0,8=0,2\\\\10\cdot (0,7-1,2)^3=10\cdot (-0,5)^3=10\cdot (-0,125)=-1,25[/tex]
