Question

N+p=978

N:p=5
Plz raspunsul

Answer 1

n+p=978
n:p=5, n=5p
5p+p=978
6p=978
p=978:6
p=163
n+163=978
n=978-163
n=815

Answer 2

N+p=978
N:p=5     N=px5

inlocuim necunoscutele:

5p+p=978
6p=978
p=163

N+163=978
N=978-163
N=815

proba:
815+163=978
815:163=5