X×(1⼀12+1⼀15)+(1⼀9+1⼀15)×3=1 求X的值

2025-02-03 05:44:43
推荐回答(2个)
回答1:

X×(1/12+1/15)+(1/9+1/15)×3=1
(5/60+4/60)x+1/3+1/5=1
3/20x=1-5/15-3/15
3/20x=7/15
x=7/15÷3/20
x=28/9

回答2:

x=28/9