4x+1.2x5=28.8解:4x+6=28.84x=28.8-64x=22.8x=5.7
4x+6=28.84x=28.8-64x=22.8x=5.7
4x+1.2x5=28.8解:4x+6=28.84x=28.8-64x=22.8x=22.8÷4x=5.7