The answer is ¾ considering that they have the same denominator, you don't need to find the Least CommonDenominator. Since they all have same denominator you just need to copy the denominator which is 4 and add the numerator above.
4xy³+ 3x³y²- x³yStep-by-step explanation:12x³y⁴+9x⁵y³-3x⁵y² by 3x²y 4xy³ 3x³y² - x³y12x³y⁴+9x⁵y³-3x⁵y² = 3x²y (4xy³+ 3x³y²- x³y)I’m not sure if this is the answer you need but let me know!