5x=3×11.2-3x5x+3x=33.68x=33.6x=33.6/8x=4.2
5x=3X（11.2-x）解:5x=33.6-3x 5x-3x=33.6 2x=33.6 x=16.8
5X=3×(11.2-x)怎么解过程？5X=3×(11.2-x)5x=33.6-3x5x+3x=33.68x=33.6x=4.2
