Найдите разность: \( -\) \( 4\) \( 7\) \( 9\) \( 2\) \( 1\) \( 2\)

Задание

Найдите разность:

\(\displaystyle -\)	\(\displaystyle 4\)	\(\displaystyle 7\)	\(\displaystyle 9\)
\(\displaystyle -\)	\(\displaystyle 2\)	\(\displaystyle 1\)	\(\displaystyle 2\)
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