Without calculating, is the equation (1.8 times 3) times 2.1 = (1.8 times 2.1) true or false? Explain your reasoning.

Question

Mathematics

Krystal Meza

23 March, 21:05

Without calculating, is the equation (1.8 times 3) times 2.1 = (1.8 times 2.1) true or false? Explain your reasoning.

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Answers (1)

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Rufus · Answer 1

It is true due to the commutative property of multiplication. If all of your operations are multiplication, then the integers can move around and you can still get the same answer.

^This is only true if you meant to type (1.8x3) x2.1 = (1.8x2.1) x3

If you meant what you typed, then the equation is false. The left side would be 3 times the value of the right side due to the 3 being on the left side and not the right side while without the 3 the two sides would be equal.