解方程 9分之8X=6分之1乘51分之16 X÷35分之6=45分之26÷25分之13 脱式计算 35分之18÷0.6乘3分之2
问题描述：
解方程 9分之8X=6分之1乘51分之16 X÷35分之6=45分之26÷25分之13 脱式计算 35分之18÷0.6乘3分之2
答
=x-[-1/(x-1)+(x³-3x+1)/(x+1)(x-1)]/[-(x²-4)]
=x+[(-x-1+x³-3x+1)/(x+1)(x-1)]/(x²-4)
=x+[(x³-4x)/(x+1)(x-1)]/(x²-4)
=x+[x(x²-4)/(x+1)(x-1)]/(x²-4)
=x+x/(x+1)(x-1)
=(x³-x+x)/(x+1)(x-1)
=x³/(x²-1)
答
8/9x=1/6×16/51
8/9x=16/306
x=16/306÷8/9
x=12/103
x÷6/35=26/45÷13/25
x÷6/35=10/9
x=10/9×6/35
x=4/21
18/35÷0.6×2/3
=6/7×2/3
=4/7
答
8/9x=1/6×16/51
8/9x=16/306
x=16/306÷8/9
x=12/103
x÷6/35=26/45÷13/25
x÷6/35=10/9
x=10/9×6/35
x=4/21
18/35÷0.6×2/3
=6/7×2/3
=4/7