Is there a way to solve two linear equations in python without the use of any module?

Question

Is there any way of solving two linear equations simultaneously in python without the use of a module?? I want to solve these two equations but can't seem to find the approach .

                         a - b = 1
                         a + b = 5

Thanks in advance.

although it is not relevant but still the solution would be: a=3 and b=2 — Manav Singh Chauhan, Nov 14 '19 at 14:31
of course it is possible, but you have to represent that algebraic expression in terms of python syntax. — marmeladze, Nov 14 '19 at 14:31
use tokenize from python stdlib. this will tokenize expressions so you can read and parse them to more relevant structure. https://docs.python.org/3/library/tokenize.html. — marmeladze, Nov 14 '19 at 14:53

score 1 · Answer 1 · answered Nov 14 '19 at 14:35

1

Implement Gauss Jordan elimination. Its not a great way to do it, but for two equations a simple analytical solution will pop out.

answered Nov 14 '19 at 14:35

SomeGuest

11
1

will it work for more than two variables and more than two equations? – Manav Singh Chauhan Nov 14 '19 at 14:39

score 1 · Accepted Answer · answered Nov 14 '19 at 14:57

1

you will need linear algebra module such as numpy.

#e.g. 
import numpy as np

X = np.array([[1,-1], [1,1]])
y = np.array([1,5])
np.linalg.inv(X).dot(y)

answered Nov 14 '19 at 14:57

Yonas Kassa

3,362
1
18
27

Is there a way to solve two linear equations in python without the use of any module?

2 Answers2