x-75%x=1.5 x+x=72×(1+)
24×25%=
160÷40%=
1-72%=
36%+64%=
80×(1+25%)=
60÷(1-40%)=
45×(1-20%)=
72÷(1+20%)=
3x+1 =23.5 1.3x÷5 =5.2 9x﹣0.3×2 =53.4
35%×50=
x+1.3x= 26 1.5x-1.5=1.5
1.8+0.2x=4 3.6÷1.5x=3
①x﹣ =0.25
② x﹣ =120
③ =50%
①1.5x-2.8=4.7
②
③12: =
②x: =4: .