Explanations:
To simplify the expression n - 0.61 - 0.24n:
The first step is to collect like terms, the expression becomes:
n - 0.24n - 0.61
Note that n is the same as writing 1n, the expression can then be rewritten as:
1n - 0.24n - 0.61
0.76n - 0.61 (Note that you cannot subtract 0.61 because it does not have the variable n)
The simplified expression is therefore 0.76n - 0.61
