3/5x=20*1/4 x = 5 x 5/3 x = 3分之2525％+10x=4/5 10x = 0.8 - 0.25 10x = 0.55x = 0.055x-15％x=680.85x = 68x = 80 无量寿佛,佛说苦海无涯回头是岸!施主,我看你骨骼清奇,器宇轩昂,且有慧根,乃是万中无一的武林奇...