text: multiplication comes first... Hence...\n\n2x2=4\n4x2=8\nhence, 2x2x2=8\n\nbrackets come next esp those in brackets\n\n-2+18=18-2=16\n(-2+18)3=(16)(3)=48\n4-(-2+18)3 = 4-48 = -44\n\nThe bigger bracket is next...\n\n10[4-(-2+18)3]=10(-44)\n\nfinally comes subtract\n\n2x2x2-10[4-(-2+18)3]\n= 4x2-10[4-(16)3]\n= 8-10[4-48]\n=8-10(-44)\n=8+440\n=448