60*0.8+1.2x=(60+x)*0.88 细节一定要写!细写
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60*0.8+1.2x=(60+x)*0.88 细节一定要写!细写
60*0.8+1.2x=(60+x)*0.88
细节一定要写!细写
60*0.8+1.2x=(60+x)*0.88 细节一定要写!细写
60*0.8+1.2x=(60+x)*0.88
48+1.2x=52.8+0.88x
0.32x=4.8
x=15
上面的错了吧?
验算下 --汗,2L直接抄了
60*0.8+1.2x=(60+x)*0.88
48+1.2x=60*0.88+0.88x
1.2x-0.88x=52.8-48
0.24x=4.8
x=4.8÷0.24
x=20
60*0.8+1.2x=(60+x)*0.88
48+1.2x=60*0.88+0.88x
1.2x-0.88x=52.8-48
0.24x=4.8
x=4.8÷0.24
x=20
x/(120-x)=x/60
12x(x+x)=60 X=?
60×0.8+(x-60)×1.2=0.08x
解方程1) 5.2x-1.2x=60 2) 8.7(3.6-x)=0 3) (38.5-x解方程1) 5.2x-1.2x=602) 8.7(3.6-x)=03) (38.5-x-4.5)÷0.8=16
(X-1)(X-2)(X+2)(X+3)=60(X-1)(X-2)(X-3)(X-4)+1=0(X-5)/(X-6)+(X-8)/(X-9)=(X-7)/(X-8)+(X-6)/(X-7)
12=( )X( )X( ) 60=( )X( )x( )X( )
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