计算下面各题能简算的要简算 1.3/4×3/5+2/5×3/4= = = = 2.8×5/6+2/5÷4= = = =

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计算下面各题能简算的要简算1.3/4×3/5+2/5×3/4====2.8×5/6+2/5÷4====计算下面各题能简算的要简算1.3/4×3/5+2/5×3/4====2.8×5/6+2/5÷4==

计算下面各题能简算的要简算 1.3/4×3/5+2/5×3/4= = = = 2.8×5/6+2/5÷4= = = =
计算下面各题能简算的要简算 1.3/4×3/5+2/5×3/4= = = = 2.8×5/6+2/5÷4= = = =

计算下面各题能简算的要简算 1.3/4×3/5+2/5×3/4= = = = 2.8×5/6+2/5÷4= = = =