Question

Apropo dau si coronita si  va rog repede asta e exercitiul
Afla ce valori ale lui X sunt adevarate inegalitatile:
a)X<12x35-30x13
b)30<X<440-(77+5)

Answer 1

a)5050=x
b)31=x asa e raspunsul meu

Answer 2

x<12*35-30*13
x< 420-390
x< 30; x∈ { - ∞;30}

30<x<440-(77+5)
30<x<440-83
30<X< 357
x∈ [31; ....357}