Question

am adunat doua numere naturale si am obtinut suma 84.Catul dintre primul numar si al doilea este 3 si restul 0.

Answer 1

a + b = 84
a : b = 3
a = 3b
3b + b = 84
4b = 84
b = 84 : 4
b = 21
a = 84 - 21
a = 63

Answer 2

$a+b=84\\a:b=3 \ rest \ 0 \to \boxed{\bold{a=3b}} \\******************\\\\3b+b=84\\4b=84\\b=84:4\\\boxed{\bold{b=21}} \\ \\ a=3*21\\\boxed{\bold{a=63}}$