10×1/6-10x＝25/10×1/6＋25/10×1/4-25/10x 5/3-10x＝25/60＋25/40-25/10x 5/3-10x＝5/12＋5/8-5/2x -10x＋5/2x＝5/12＋5/8－5/3 -15/2x＝-15/24 x＝1/12
