3 3/10
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to find the answer to the equation, you need to find the least common denominator (LCD) of the three fractions:
15: 15, 30, 45, 60, 75
10: 10, 20, 30, 40, 50, 60
5: 5, 10, 15, 20, 25, 30
in this problem, the LCD is 30.
then, multiply the numerator by the number you found the LCD with:
⁶⁄₁₅ = ¹²⁄₃₀, ³⁄₁₀ = ⁹⁄₃₀, and ⅗ = ¹⁸⁄₃₀.
¹²⁄₃₀ + ⁹⁄₃₀ + ¹⁸⁄₃₀ = 3 ⁹⁄₃₀ = 3 ³⁄₁₀ when simplified.
(i attached my scrap paper just in case)
