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rezolvati ecuatia si inecuatia
(2x-1)•2,5=15
6x+1mai mic sau egal decat 3x+10


Răspuns :

1).
(2x+1)*2,5=15
5x+2,5=15
5x=17,5
x=17,5:5=3,5 ;
2)
6x+1≤3x+10
6x-3x≤10-1
3x≤9
x ≤ 3
x∈(-∞;3]