1\4x=x-27怎么解
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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