2 4/15−(2−1 1/15):4/9+9/2
34/15-(-2-16/15)*9/4+9/2
34/15-14/15*9/4+9/2
34/15-7/5*3/2+9/2
34/15-21/10+9/2
14/3=4 2/3=4.6
2 4/15−(2−1 1/15):4/9+9/2
34/15-(-2-16/15)*9/4+9/2
34/15-14/15*9/4+9/2
34/15-7/5*3/2+9/2
34/15-21/10+9/2
14/3=4 2/3=4.6