Obliczenia od a) do c)
[tex]-4\cdot(-2-11)=-4\cdot(-13)=\boxed{52}\\\\-7+2\cdot(-5)=-7-10=-(7+10)=\boxed{-17}\\\\-11-12:(-6)=-11+2=-(11-2)=\boxed{-9}[/tex]
Obliczenia od d) do f)
[tex]-8-5\cdot(-4)-4\cdot(-6)=-8+20+24=12+24=\boxed{36}\\\\\frac{7+(-15)}{-2}+\frac{-8}{-3-1}=\frac{7-15}{-2}+\frac{-8}{-4}=\frac{-8}{-2}+2=4+2=\boxed6\\\\\frac{-11-9}{-4}-\frac{6-12}{-3}=\frac{-20}{-4}-\frac{-6}{-3}=5-2=\boxed3[/tex]
