解:5/8+25/7+6/5等于( 1511/280 )
∵已知需求出5/8+25/7+6/5等于多少
∴5/8 + 25/7 + 6/5
= (5×35)/(8×35)+ (25×40)/(7×40)+(6×56)/(5×56)
= 175/280 + 1000/280 + 336/280
= 1175/280 + 336/280
= 1511/280
答:5/8+25/7+6/5等于1511/280
=175/280+1000/280+336/280
=1509/280
5/8+25/7+6/5
=175/280+1000/280+336/280
=1511/280