Function basic_solve 

pub fn basic_solve(
    system: &str,
    ctx: &mut ContextHashMap,
    declared: &mut HashMap<String, [f64; 3]>,
    margin: f64,
    limit: usize,
) -> Result<(Vec<String>, HashMap<String, f64>)>

Solves a system of equations in plain-text format. For more supported syntax, see solve_with_preprocessors

Example