x-40%x=120
0.6x=120
0.6x÷0.6=120÷0.6
x=200;
15x-30=150
15x-30+30=150+30
15x÷15=180÷15
x=12;
60%x-35%x=125
0.25x=125
0.25x÷0.25=125÷0.25
x=500;
(1+15)x=230
16x=230
16x÷16=230÷16
x=14.375.
x-40%x=120
0.6x=120
0.6x÷0.6=120÷0.6
x=200;
15x-30=150
15x-30+30=150+30
15x÷15=180÷15
x=12;
60%x-35%x=125
0.25x=125
0.25x÷0.25=125÷0.25
x=500;
(1+15)x=230
16x=230
16x÷16=230÷16
x=14.375.