Сложите числа \(\displaystyle 4{,}5\) и \(\displaystyle 3{,}5\small.\)

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Сложите числа \(\displaystyle 4{,}5\) и \(\displaystyle -4{,}5\small.\)

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Сложите числа \(\displaystyle 4{,}5\) и \(\displaystyle -6\small.\)

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Сложите числа \(\displaystyle 4{,}5\) и \(\displaystyle 0\small.\)

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