a)5×{7+3×[46+6×(27-32:4)]}=
=5×{7+3×[46+6×(27-8)]}=
=5×[7+3×(46+6×19)]=
=5×[7+3×(46+114)]=
=5×(7+3×160)=
=5×(7+480)=
=5×487=
=2435
b)
(2^8)^2 :2^2^4 ×(3^2-1)-3^0×2^2=
=2^16 :2^16 ×(9-1)-1×4=
=1 ×8-1×4=
=8-4=4
c)(3^19 × 25^9)^2 : 15^36=
=(3^19 × 5^18)^2 : 3^36×5^36=
=3^38 × 5^36 : 3^36×5^36=
=3^2=9
