11.b. . (9+3⁴:3⁴):10+81×82:41:3³-1=
= (9+1):10+81×82:41:3³-1
=10:10+81×82:41:3³-1
=1+81×82:41:3³-1
=3⁴×82:41× 1
3³
=3⁴×2× 1
3³
=3×2
=6
c.18176:71-3×(29×24-23×30)+11⁷:11⁵=
=256-3(696-690)+11²
=256-3×6+121
=256-18+121
=238+121
=359
d.(84084:42+13):403+9×[85085:11-3×(73×16-1143)]=
=(2002+13):403+9×[7735-3×(1168-1143)]
=2015:403+9×(7735-3×25)
=5+9×(7735-75)
=5+9×7660
=5+68940
=68945
