X+3.2=6.4 X—7.9=2.6 1.5X=4.56
X÷0.92=1.5 6X—3.9=8.4 6X+4.2=16.8
3X×4=26.52
2.8X—1.5×0.2=1.1
4(0.8+X)=7.2
3X÷9=8.1 2X+2.4X=13.2 3(X—4)=6 0.4X+2×8=80 5.6X—3.2X=10.5 X—1.5）÷2=4 （27.8—X=12.35 12.5÷X=0.05 4X+2(11—X)=42
3X=X+100 5X=3X+6 x+2x+18=78
7(6.5+x)=87.5
13.2x+9x=33.3
5X—4×1.8=0.3
6.3x÷4=2.52 ÷5=30 5x+12.5=32.3 5X+4×1.8=9.7 1.2x-0.5x=6.3 9.4x－0.4x＝16.2 6.7x－60.3＝6.7 6.3x×4=50.4 10.5x+6.5x=51
(200-x)
