12e-5f-7e+3f=
(12e - 5f) - (7e + 3f)
To simplify the expression 12e-5f-7e+3f, we need to combine like terms.
The terms with "e" and "f" are not like terms since they have different variables. Therefore, we cannot simplify them further.
So, the simplified expression remains: 12e - 5f - 7e + 3f
To solve the equation 12e-5f-7e+3f = 0, we need to collect like terms.
Let's start by grouping the terms with the same variable:
12e - 7e - 5f + 3f = 0
Next, combine the like terms:
(12e - 7e) + (-5f + 3f) = 0
Simplifying further:
5e - 2f = 0
Now the equation is in simplified form. However, we can't solve it as it stands because we have two variables, e and f. To find a solution, we would need either another equation involving these variables or additional information about their values.