能简算要简算：30×(4/5+5/6)=?2/15×3+13/15÷1/3=?

题目

能简算要简算：30×(4/5+5/6)=?2/15×3+13/15÷1/3=?

答案

30×(4/5+5/6)
=30×(4/5)+30×(5/6)
=6×4+5×5
=24+25
=49
(2/15)×3+(13/15)÷1/3
=(2/15)×3+(13/15)×3
=3×(2/15+13/15)
=3×1
=3