помогите решить. -5+(5+(-99))=? (-48+91)+(-91)=? (-34+59)+34=? (47+(-91))+91=? (-4)+(-2)+22+14=? -28+(18+29)=? -10+(-10+30)=?

-5+(5+(-99)=-5+(-94)=-5-94=-99(-48+91)+(-91)=43-91=-48(-34+59)+34=25+34=59(47+(-91))+91=(47-91)+91=47(-4)+(-2)+22+14=-4-2+22+14=-6+36=30-28+(18+29)=-28+47=19-10+(-10+30)=-10+20=10

-5+(5+(-99)=-5+(-94)=-99(-48+91)+(-91)=43+(-91)=-48(-34+59)+34=25+34=59(47+(-91))+91=-44+91=47(-4)+(-2)+22+14=30-28+(18+29)=-28+47=19-10+(-10+30)=-10+20=10