Evaluate the Algebraic Fraction: (a-bc)/(b·-c) = 0

Question

Indicate whether true or false

abcbc=0 \frac{a-b\operatorname{\cdot}c}{b\operatorname{\cdot}-c}=0

Video Solution

Solution Steps

00:00 Determine if the equation is correct
00:10 Let's use the commutative law and arrange the expression
00:14 Let's compare the expressions
00:19 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we will follow these steps:

  • Step 1: Analyze the numerator abc a - b \cdot c .
  • Step 2: Analyze the denominator bc b \cdot -c .
  • Step 3: Determine conditions for the fraction to be zero.

Now, let's work through each step:
Step 1: The numerator is abc a - b \cdot c . This becomes zero if a=bc a = b \cdot c .
Step 2: The denominator is bc=(bc) b \cdot -c = -(b \cdot c) . This simplifies to the negative of the product bc b \cdot c .
Step 3: For the expression abcbc \frac{a-b \cdot c}{b \cdot -c} to equal zero, the numerator must be zero, i.e., a=bc a = b \cdot c , but the denominator must not be zero. However, if a=bc a = b \cdot c , then the denominator becomes zero because it’s negative of the same product, (bc) -(b \cdot c) , creating an undefined scenario rather than zero.

Since making the numerator zero results in the denominator being undefined, the expression cannot be zero. Therefore, the statement is Not true.

Answer

Not true