Question

6+8•[32:4-5•(4^3-7•3^2)]

Answer 1

6+8×[32:4-5×(4^3-7×3^2)]=
6+8×[32:4-5×(64-7×9)]=
6+8×[32:4-5×(64-63)]=
6+8×(32:4-5×1)=
6+8×(8-5)=
6+8×3=6+24=30

Answer 2

6+8•[8-5 •(64-7•9 )]
6+8•[8-5 •(64-63)]
6+8• (8-5 • 1)
6+8•(8-5)
6+8•3
6+24
30