Solutia ecuatiei: 2x-7=5 deci x=?
2X-7=5
2X=5+7
2X=12
X=6
-2X+3≥11X
-2X-11X≥-3
-13X≥-3
X≤3/13
X∈( -∞,3/13]
SPER CA TE-AM AJUTAT