How do I solve linear equation?

Question

Basically, I need to solve the number of classes to be attended to reach a certain percentage. It leaves me with this formula:

required_percentage=(attended+x/conducted+x)*100.

Here, I require "x" as it is the number of classes to be attended.

I tried using sympy module:

import sympy
from sympy.abc import x
sympy.solve(f"(({attended}+x)/({conducted}+x))*100/{required}","x")

But this just constantly gave this answer: [-4]. Upon manual calculation it solves to 30.

Don't you mean `- {required}`. Sympy is trying to set that equation to 0. — Frank Yellin, Apr 26 '23 at 19:31
It would also be useful if you let us know what values you used for `attended`, `conducted`, and `required`. — Frank Yellin, Apr 26 '23 at 19:32

score 2 · Accepted Answer · answered Apr 26 '23 at 20:24

2

x=((required_percentage * conducted)-(100*attended))/(100-required_percentage)

Got from just manually rearranging the equation for x.

answered Apr 26 '23 at 20:24

NEPTTUNE

1 Answers1