解答:
6(1-(1-x)5)=1
1-(1-x)5=1/6
(1-x)/5=5/6
∴ 1-x=25/6
∴ x=-19/6
(1-x)12+10=-x
(1-x)/12=-(x+10)
1-x=-12(x+10)
1-x=-12x-120
11x=-121
x=-11
((1.2y-1) .3)-((1-2y) .6)=y
两边同时乘以0.6
(1.2y-1)*2-(1-2y)=0.6y
2.4y-2-1+2y=0.6y
3.8y=3
y=15/19
解答:
6(1-(1-x)5)=1
1-(1-x)5=1/6
(1-x)/5=5/6
∴ 1-x=25/6
∴ x=-19/6
(1-x)12+10=-x
(1-x)/12=-(x+10)
1-x=-12(x+10)
1-x=-12x-120
11x=-121
x=-11
((1.2y-1) .3)-((1-2y) .6)=y
两边同时乘以0.6
(1.2y-1)*2-(1-2y)=0.6y
2.4y-2-1+2y=0.6y
3.8y=3
y=15/19