您好!过程及答案为:解:1.8-3/4x=3/53/4x=1.8-3/53/4x=1.2x=1.6满意请采纳,谢谢
0.63*5-3/4X=0.61.8-3/4X=0.63/4X=1.8+0.63/4X=1.24X=3/1.24X=2.5X=2.5/4X=0.625
1.8-0.75x=0.60.75x=1.8-0.60.75x=1.2x=1.2÷0.75x=1.6
答案是x等于1.6
1.6