Question

Ce suma de bani a avut la inceput Andrei,daca dupa ce primeste de la mama 75 de lei,de la bunic 40 de lei si isi achita datoria de 80 lei,ii mai raman 400 lei?

Answer 1

(x+75+40)-80=400
(x+115)-80=400
x+115=400+80=480
x+115=480
x=480-115
x=365 lei la inceput

Answer 2

a+75+40-80=400
a+75+40=400+80
a+75+40=480
a+75=480-40
a+75=440
a=440-75
a=365

verif : 365+75+40-80=400 lei ( atat spune problema ca-i raman).