解比例 (过程) 5.2 : x = 5.7 :19
5.2x-1.3=2.6这个方程怎么解?
5.2x—12=36怎么算马上
5.2x4分之1十1.8x0.25十25%等于多少
解方程: 8 5.2x=18.4 6x 1.6x=22.8 0.6x-2.4=18
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