5/6a³-1/3a²-2ab+5a³b²-1/3+5/6+3ab+2/3ba²

5/6a³-1/3a²-2ab+5a³b²-1/3+5/6+3ab+2/3ba²
5/6a³-1/3a²-2ab+5a³b²-1/3+5/6+3ab+2/3ba²

5/6a³-1/3a²-2ab+5a³b²-1/3+5/6+3ab+2/3ba²
5/6a³-1/3a²-2ab+5a³b²-1/3+5/6+3ab+2/3ba²
=5/6a³-1/3a²+ab+8a³b²+2/3a²b

原式=5/6a³-1/3a²-2ab+5a³b²-1/3+5/6+3ab+2/3ba²
=5/6a³-1/3a²+（-2+3）ab+5a³b²-（2/6+5/6）+2/3ba²
=5/6a³-1/3a²+ab+5a³b²+2/3a²b-7/6
=5a³b²+5/6a³+2/3a²b-1/3a²+ab-7/6