Question

Aflati doua numere naturale care au diferenta 70,câtul 5 si restul 2.
Dau coroana.

Answer 1

a-b=70
a:b=5 rest 2
a=5b+2
5b+2-b=70
4b+2=70
4b=70-2
4b=68
b=68:4
b=17
a=5*17+2
a=85+2
a=87

Answer 2

$\text {Metoda~grafica}$ :

a |-----|-----|-----|-----|-----|-2-|
b |-----|----------70-------------|

70-2=68 (4 segmente egale)
68:4=17 (1 segment)

a=17×5+2=87
b=17