Q. Perform the operation and express your answer as a single fraction in simplest form.3x25−15x34Answer:
Find LCD: To combine the fractions, we need a common denominator. The least common denominator (LCD) for 3x2 and 15x3 is 15x3.
Rewrite first fraction: Rewrite the first fraction with the common denominator by multiplying both the numerator and the denominator by 5x. This gives us (5×5x)/(3x2×5x)=25x/15x3.
Keep common denominator: The second fraction already has the denominator 15x3, so we do not need to change it. Now we have two fractions with the same denominator: (25x)/(15x3)−(4)/(15x3).
Subtract numerators: Subtract the numerators and keep the common denominator: (25x−4)/15x3.
Simplify expression: The numerator cannot be simplified further because 25x and 4 do not have any common factors, and the variable x cannot be canceled with the x3 in the denominator. So, the expression is already in its simplest form.
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