2:3/5+3/5:2+1 1/2:6+6: 1 1/2

Assuming “:” means division, compute each term:

• 2 ÷ (3/5) = 2 × (5/3) = 10/3
• (3/5) ÷ 2 = (3/5) × (1/2) = 3/10
• (1 1/2) ÷ 6 = (3/2) ÷ 6 = 3/12 = 1/4
• 6 ÷ (1 1/2) = 6 ÷ (3/2) = 4

Sum: 10/3 + 3/10 + 1/4 + 4 Convert to common denominator 60: 200/60 + 18/60 + 15/60 + 240/60 = 473/60

Final answer: 473/60 = 7 53/60 ≈ 7.8833