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Which of these is an example of the rule a × b = b × a?

Class 6Rules and Formulas with VariablesAlgebra

A $6 \times (9 + 1) = 6 \times 9 + 6 \times 1$
B6 − 9 = 9 − 6
C $6 \times 9 = 9 \times 6$
D6 + 9 = 9 + 6

Step-by-Step Solution

a \times b = b \times a

is commutativity of MULTIPLICATION, so we need a product with the order swapped:

6 \times 9 = 9 \times 6 = 54

. (6 − 9 = 9 − 6 is false.)

Answer: C)

6 \times 9 = 9 \times 6

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