①+x= ②4x-= ③-x=
24x-1.6x=36
1.26﹣2x=0.74 :x=:
0.24:3=3:x
3:x=9:15
① ② ③
76x=136.8 9.2+0.8x=11.6 7x+3x-25=73
6x-18=120 x÷9=12.6 *3.8x-x=0.56
5.34+x= 30.6
7x = 17.5
x+5x = 36
4x+9=25 x÷4=25 4×3.2+2x=20.8