作业帮[ ]:0.2=80:[ ]=2.5=[ ]:12=[ ]%请将正确答案填写在括号内.
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[ ]:0.2=80:[ ]=2.5=[ ]:12=[ ]%请将正确答案填写在括号内.
[ ]:0.2=80:[ ]=2.5=[ ]:12=[ ]%请将正确答案填写在括号内.
[ ]:0.2=80:[ ]=2.5=[ ]:12=[ ]%请将正确答案填写在括号内.
[ 0.5]:0.2=80:[ 32]=2.5=[ 30]:12=[ 250]%
[ ]:0.2=80:[ ]=2.5=[ ]:12=[ ]%请将正确答案填写在括号内.
80/x=2.5×80/(x+2.5)
19.8x+0.2x=2.5×2
0.2x-1.5=2.5简便计算
1.4*2.5-0.2x=1.
3x-1.5/0.2-0.2x-0.1/0.03=2.5
80除以x=2.5×80除以x+2.5
80/x=2.5×80/(x+2.5)如何解
80%X-0.2=3解方程
50+0.2X=80 怎么解
x-0.2x=80 求x
0.5*80—2.5x=32.5
x分之80=2.5*{x+2.5}分之80.
（80×2.5）＋2.5x=450 解方程
80+1.5(x-80)+0.2x=640怎么算
3x-2.5x=0.2解方程
0.2分之x+3-0.4x-1=-2.5
0.2分之0.1x+0.3+2.5=0.4x-1