=18+5/10+(4+0.1)X(7+0.2)- (9+5/10)÷(7+6/10) =18+5/10+28+8/10+7/10+0.02-(19/2 ÷ 38/5) =18+2+28+0.02-5/4 =48.02-1.25 =46.77