解 2/3X=5/6 等式两边同除以2/3得 X=5/6÷2/3 X=5/6×3/2 X=5/4 7/10X=14/25 等式 两边同除以7/10得 X=14/25÷7/10 X=14/25×10/7 X=4/5 2X+1/2=1 等式两边同减去1/2得 2X=1-1/2 2X=1/2 X=1/4
