3.2X2.5-0.75x=28-0.75x=2 -0.75x=2-8-0.75x=-6 x=6÷0.75 x=8希望帮到你 望采纳 谢谢 加油
3.2乘2.5减0.75x等于23.2*2.5-0.75x=20.75x=3.2*2.5-20.75x=8-2x=6/0.75x=8
