First degree equation

Question

I'm trying to do something simple and easy to calculate the value of x from a first degree equation.
I have this script:

a = int(input('Type the value a: '))
symb = input('Type the symbol: ')
b = int(input('Type the value b: '))
c = int(input('Type the value c: '))
x = int()
if symb == '+':
n1 = (a*x + b == c)
n1 = (x == (c - b)/a)
n1 = (x)

There's a lot of things out here, but this is the main idea. Does anyone know a better way to do it like that?

Thanks in advance.

Answer 1

Alexandre Leal de Medeiros Martins Moura
try this:

# sample input:
# 5 8 9
# +
a, b, c = map(int, input().strip().split(' '))
op = input()
print('inputs:')
print(f'{a = }, {b = }, {c = }, {op = }')

print('\nsolution:')
if op=='+':
x = (c - b)/a
print(f'{a}x + {b} = {c}\n{x = }')
if op=='-':
x = (c + b)/a
print(f'{a}x - {b} = {c}\n{x = }')
if op=='/':
x = c * b /a
print(f'{a}x / {b} = {c}\n{x = }')
if op=='*':
x = c /b / a
print(f'{a}x * {b} = {c}\n{x = }')

Answer 2

Awesome!
Thank you so much, Bob_Li.
Can I use your code in my project?

Answer 3

yes. you could probably even improve it.

Answer 4

Thanks, Bob_Li . I'll do it for sure.

Answer 5

Alexandre Leal de Medeiros Martins Moura
if you're interested in algebra, you could try sympy
https://www.sympy.org/en/index.html

from sympy import symbols,expand,factor

x, y = symbols('x y')
exp = 2*x + y
print(f'{exp = }')
print(f'{exp + 1 - x = }')

exp2 = x*exp
print(f'{x*exp = }')

exp3 = expand(x*exp)
print(f'{expand(x*exp) = }')

print(f'{factor(x**2 + 2*x*y) = }')