Question

The temperature in Frost-burg is -7 Degrees C. This is 18 degrees C less then the temperature in Cold-spot. How do you find the temperature in cold spot?

Answer 1

Temperature in Cold-spot is `11^@C`

Explanation:

Let `f` be the temperature in Frost-burg and `c` be the temperature in Cold-spot (both in degrees centigrade).

We are told
[1]`color(white)("XXX")f=-7`
and
[2]`color(white)("XXX")f=c-18`

Substituting the value `(-7)` (from [1]) for `f` in [2]
[3]`color(white)("XXX")-7=c-18`

Add `18` to both sides:
[4]`color(white)("XXX")11=c`