Question

82+4×[f-3×(54+54:6)]=2×(256-197)

Answer 1

82 + 4 x [ f - 3 x ( 54 + 54 : 6 )] = 2 x ( 256 - 197 )
82 + 4 x [ f - 3 x ( 54 + 9 )] = 2 x 59
82 + 4 x [  f - 3 x 63 ] = 118
4 x [ f - 3 x 63 ] = 118 - 82
4 x [ f - 189 ] = 36
f - 189 = 36 : 4
f - 189 = 9
f = 9 + 189
f = 198

Answer 2

82+4*[f-3*(54+54/6)]=2*59
82+4*[f-3*(54+54/6)]=118
82+4*[f-3*(54+9)]=118
82+4*(f-3*63)=118
4*(f-189)=118-82=36
f-189=36/4=9
f=9+189
f=198