你好,1071116497 75%x+3.2=675%x=6-3.275%x=2.8x=2.8/75%x=2.8/0.75x=56/15
解: 0.75X=6-3.2 X=2.8÷0.75=11.2/3=
0.75X+3.2=6 0.75X=2.8 X=3.7334 是这样子答吧