关于0.29×12.6+2.9×1.74的简便解答，具体的计算过程如下：0.29×12.6+2.9×1.74=0.29×12.6+0.29×17.4=0.29×（12.6+17.4）=0.29×30=8.7
1.26x0.29+2.9x1.74解:1.26x0.29+0.29x17.4 = (1.26+17.4)x0.29 =18.66x0.29 =5.4114
