七分之一加七分之三加2.88加七分之四寫(xiě)出計(jì)算過(guò)程

七分之一加七分之三加2.88加七分之四
=1/7 + 3/7 + 2.88 + 4/7
=(1/7 + 3/7+ 4/7)+ 2+0.88
=1+1/7+2+0.88
=3+1/7 + 22/25
=3+25/175 + 154/175
=3 + 179/175
=4又4/175