Multiply each rational number, given below, by one (1):
−813\dfrac{-8}{13}13−8
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−813×1=−8×113×1=−813\dfrac{-8}{13} \times 1\\[1em] =\dfrac{-8 \times 1}{13 \times 1}\\[1em] =\dfrac{-8}{13}13−8×1=13×1−8×1=13−8
Hence, −813×1=−813\dfrac{-8}{13} \times 1 = \dfrac{-8}{13}13−8×1=13−8
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−3−4\dfrac{-3}{-4}−4−3
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−6−7\dfrac{-6}{-7}−7−6
For each pair of rational numbers, given below, verify that the multiplication is commutative:
−15\dfrac{-1}{5}5−1 and 29\dfrac{2}{9}92
