(5/6+5/8)•3/7

Compute step by step:

• 5/6 + 5/8 = 5(1/6 + 1/8) = 5((4+3)/24) = 35/24
• (35/24) × (3/7) = (35×3)/(24×7) = 105/168 = 5/8 (cancelling 21)

Final answer: 5/8.