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Rezolvati in R sistemul de inecuatii: {2x+1≤13
{9-2x∠x Ajutor va rog


Răspuns :

2x<_13-1
2x<_12
x<_12/2
X<_6
2x+1<_13
-13<_2x+1<_13\-1
-14<_2x<_12\:2
-7<_x<_6=> X€{-7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7}