18xxxx4xx 5x1x3xxx7xxx8xxxxx x8xxxxx6xxx9x345xx xxxxx6xx4x4x96xxxx xx3961xxx52xx8xx76 8xx5x3xx9xxxx53x1x xxx7286xxxx251x7xx 1xx3xxxxxxxxxx2xxx x2xxxxx3xxx7xxxx92 9xxx7x8x1

18xxxx4xx 5x1x3xxx7xxx8xxxxx x8xxxxx6xxx9x345xx xxxxx6xx4x4x96xxxx xx3961xxx52xx8xx76 8xx5x3xx9xxxx53x1x xxx7286xxxx251x7xx 1xx3xxxxxxxxxx2xxx x2xxxxx3xxx7xxxx92 9xxx7x8x1 5/18 简算：（5/18*3+5/18)*0.25 5x=18 181-32×5+18 11/18+5/12 5/12乘以5/18 (5/24+3/18)*24*18简算 16*[18+(18+5)]=4 7/18除以5/11+5、18乘5/11 5/18*13/5+13/18除以5/13 19×18分之5-18分之5简便计算 19*18/5-18/5要简便计算 5/18-（5/18-7/25)（脱式计算） 18/5-（18/5-25/7）= (5/18÷1/3+5/18)×0.25=?】 18x+480=【18+5】【x+5】 1/4*{4.85÷5/18--3.6+6.15*18/5}