①36.5×25%+0.25×65.5﹣2×
②45﹣×÷
③2023×+
④(7.5+x)×2=18.5
⑤x÷=
⑥:=x:22
4x﹣234=58
50%x+0.8=5.9
x: =5:1.25
5x+5=25(解方程)