Question

b)82+9×(5×5-5):(5+5×5-4×5):(9-81:9+90:10) b)15-3×6:(3×3×3:3+0:5)+30:(3:3+5)

Answer 1

82+9x(25-5):(5+25-20):(9-9+9)=
82+9x20:10:9=
82+180:10:9=
82+18:9=
82+2=84


15-3x6:(3x3x3:3+0:5)+30:(3:3+5)=
15-3x6:(9x3:3+0:5)+30:(1+5)=
15-3x6:(27:3+0)+30:6=
15-3x6:(9+0)+30:6=
15-3x6:9+5=
15-18:9+5=
15-2+5=18