0.4×6－3x＝0.3 2.4－3x＝0.3 3x＝2.1 x＝0.7
(x＋3)×4＝32 x＋3＝8 x＝5
2x/3－x/4＝0.6 8x－3x＝7.2 5x＝7.2 x＝1.44
0.8x－1.7＝0.7 0.8x＝2.4 x＝3
9.9－2.4x＝3.6x－0.2 6x＝10.1 x＝101/60
(x＋5)/3＝7.5 x＋5＝22.5 x＝17.5
0.4×6－3x＝0.3 2.4－3x＝0.3 3x＝2.1 x＝0.7
(x＋3)×4＝32 x＋3＝8 x＝5
2x/3－x/4＝0.6 8x－3x＝7.2 5x＝7.2 x＝1.44
0.8x－1.7＝0.7 0.8x＝2.4 x＝3
9.9－2.4x＝3.6x－0.2 6x＝10.1 x＝101/60
(x＋5)/3＝7.5 x＋5＝22.5 x＝17.5