(1/7.5)+(1/5)x=1
来源:百度知道 编辑:UC知道 时间:2024/06/14 16:45:41
怎么解?一步一步写
两边同时乘以37.5
得 5+7.5X=37.5
两边同时减去5
得
7.5X=32.5
两边同时乘以2
得
15X=65
两边同时除以15
得
X=13/3
我是做家教滴
(1/5)x=1-(1/7.5)
x=5*[1-(1/7.5)]
x=13/3
(3/15)x=1-1/7.5
(3/15)x=13/15
x=13/3
(1/7.5)+(1/5)x=1
1/7.5+x/5=1
1+1.5x=7.5
1.5x=6.5
x=13/3
(1/7.5)+(1/5)x=1
移项(1/5)x=1-1/7.5
两边同乘7.5 1.5x=7.5-1
合并 1.5x=6.5
系数化为1 x=13/3
13/3
7.5X2.37+25X0.189=? 1-1/2+1/6+1/12+1/20+1/30+.......+1/72+1/90=?
P IIIE 1G MHz (7.5 x 133) 还是 赛扬 1200/256/100/1.5
anti-spyware 7.5.1的破解
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