text: 2x2x2-10[4-{-2+18)3]?   multiplication comes first... hence...  2x2=4 4x2=8 hence, 2x2x2=8  brackets come next esp those in brackets  -2+18=18-2=16 (-2+18)3=(16)(3)=48 4-(-2+18)3 = 4-48 = -44  the bigger bracket is next...  10[4-(-2+18)3]=10(-44)  finally comes subtract  2x2x2-10[4-(-2+18)3] = 4x2-10[4-(16)3] = 8-10[4-48] =8-10(-44) =8+440 =448