一、计算下面各题。32(1-37.5%) ( )25% 25% +75% 753148362.5% + 1 75%-( -25%) ( + )651398167512643+52%(84%3+8.72) (80% ) + + 10932317283946580%(60% ) 87.5% 1( 50%)12.5% + 125%22754786二、解方程。60%x+25=40 x10%x=18 2x%= x+30%x=52 4013(125%)x=36 x5x%=17.5 40%X3015 2X20%X3.3 43