x-12=8解: x=
7.5+x=12.3
解: x=
2(x-3)=5.8
2.2x-x=0.3
0.7x+6×5=37
4x+6=30解: x=
10.5x-7.5x=0.9解: x=
3x+2.8=12.1解: x=
3x=1.8
解:x=
x÷5=8解:x=
0.3x+8=20
x-26=40