x÷3.6+x÷4.8=1.85x÷18+5x÷24=1.820x÷72+15x÷72=1.835x÷72=1.8x=1.8×72÷35x=9×72÷175x=175分之648
图
解： x/3.6+x/4.8=1.8x/(18/5)+x/(24/5)=1.85x/18+5x/24=9/5(20x+15x)/72=9/5175x=648x=648/175=3又123/175
