1\4x=x-27怎么解

1\4x=x-27怎么解
1\4x=x-27怎么解

1\4x=x-27怎么解
移项
x-1\4x=27
(3\4)x=27
x=27÷(3\4)
x=36

sin(π-a)=sina
cos(2π-a)=cosa
tan(1.5π-a)=cota
tan(-a-π)=-tana
sin(-π-a)=sina
所以f(a)=sinacosacota(-tana)/sin
=-cosa
（-2x）³（-xy²）²+（x³y²）²÷x
=（-8x³）（x²y^4）+（x^6y^4）÷x
=-8x^5y^4）+x^5y^4
=-7x^5y^4

x-1\4x=27
(3\4)x=27
x=27÷(3\4)
x=36

1\4x=x-27
3\4x=27
x=36

移项
x-1\4x=27
(3\4)x=27
x=27÷(3\4)
x=36

先移项
解得x=36