2⼀5㎡+1⼀3m-5⼀7=0怎么算

2/5㎡+1/3m-5/7=0怎么算
2025-05-17 17:37:26
推荐回答(1个)
回答1:

2/5㎡+1/3m-5/7=0
两边同时乘以105得
42 m²+35m-75=0
(m -1)(42m+ 75)=0
m-1=0或者42m+75=0
m=1或者m=75/42=1又33/42=1又11/17