3x=1/2 4/5 x=3/10 x÷14/15=1/7 x× 1/4=5 3/4＋x=3/43/10÷x=4/5 x＋2/3x=25 ﹙x＋8/5﹚÷40=3/20 1-3/4x=7/10 x×1/4÷4=1/8×24x＋2/5x=70.4 19-6/5x=7 3/5x=25=40 x-1/10x=18 12÷x=6/131.25÷x=1/20 x÷3=4/9 ...