3/4+x+1/4=9-11/4x+0.25
问题描述:
3/4+x+1/4=9-11/4x+0.25
答
x=5/11
答
3/4+x+1/4=9-11/4x+0.25
1+x=9.25-2.75x
3.75x=8.25
x=2.2
答
f(x)为一次函数,设f(x)=kx b f(f(x))=4x 4 f(kx b)=4x 4 k1=2,b1=4/3 k2=-2,b2=-4 f(x)=2x 4/3 f(x)=-2x-4 ..
答
3/4+x+1/4=9-11/4x+0.25
3/4+x=9-11/4x
15/4x=33/4
15x=33
x=11/5
答
3/4+x+1/4=9-11/4x+0.25
方程两边同时乘以4,得
3+4x+1=36-11x+1
15x=33
x=33/15
x=11/5
x=2.2