2/3+(4/5-2/3)x5/3简便计算（5/8+2/27）x8+11/27简便计算

Question

2/3+(4/5-2/3)x5/3 简便计算
（5/8+2/27）x8+11/27 简便计算

Answer 1

2/3+(4/5-2/3)x5/3
=2/3+4/5x5/3-2/3x5/3
=2/3+4/3-10/9
=2-10/9
=8/9