3+0.2x⼀0.2-0.2+0.3x⼀0.01=0.75 速度 有悬赏!!!!

2024-12-25 16:26:15
推荐回答(3个)
回答1:

3+0.2x/0.2-0.2+0.3x/0.01=0.75
3+x-0.2+30x=0.75
31x=0.75-2.8
x=-0.066

回答2:

31x=0.75+0.2-3
31x=-2.05
x=-41/620

回答3:

3+0.2x/0.2-0.2+0.3/0.01=0.75
6+30+2X-0.4+60X=1.5
X=0.55