(1)x+15%x=170
115%x=170
x=
(2)x÷
=
x=
(3)
x+
x=
x=
x=
(4)3x-60%x=288
240%x=288
x=120
(5)80%x-0.4×1.2=
0.8x-0.48=0.2
0.8x=0.68
x=0.85
(6)
÷
-3x=
-3x=
3x=
x=
(1)x+15%x=170
115%x=170
x=
(2)x÷
=
x=
(3)
x+
x=
x=
x=
(4)3x-60%x=288
240%x=288
x=120
(5)80%x-0.4×1.2=
0.8x-0.48=0.2
0.8x=0.68
x=0.85
(6)
÷
-3x=
-3x=
3x=
x=