n-2.3=17
The first step is to "isolate" your variable (n). To isolate your variable means to make it so that there is just n on one side of the equal sign.
To do that, you must use inverse operations and add 2.3 to each side of the equation:
n-2.3=17
+2.3 +2.3
n=17+2.3
The next step is to just simplify:
n=17+2.3
n=19.3
Hope this helps!!!