$\"\"$

\

The temperature changes from $\"\"$ to $\"\"$ .

\

The change in temperature = $\"\"$ .

\

To subtract an integer , add its opposite.

\

Opposite of $\"\"$ is 19.

\

$\"\"$ (Add 19 to 22)

\

$\"\"$ (Add : $\"\"$ )

\

$\"\"$

\

The change in temperature is $\"\"$ .