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Q: Rules in multiplying and deviding signed number?

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The rules are not the same.Multiplication is commutative whereas division is not.Multiplication is associative whereas division is not.

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Integers are real numbers; therefore, when you multiply them you must follow the rules of multiplication. Some rules include: any number multiplied by one equals itself, any number multiplied by zero is zero and every number multiplied by two is an even number.

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Because it is.

When multiplying 2 fractions, we multiply the two numerators together and the two denominators together.

Step 1 Make the whole number a fraction by making it ?/1 Step 2 Make the mixed number a improper fraction by multiplying the denominator by the whole number and then adding the numerator and putting that on top of the original denominator. Step 3 SOLVE using basic multiplying fractions rules Step 4 SIMPLIFY

The answer depends on which properties are being used to prove which rules.

rules of operation sign of numbers

The rules for dividing negative numbers is the same as multiplying them. A negative number multiplied/divided by a negative number is positive and a negative number multiplied/divided by a positive number is negative.

There are different rules for different operations.

It wasn't necessary to 'create' any rules. They follow logically from the definition of exponents.

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