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1)x+1.8>9,18
2)7,3x+1,2<_21,98


Răspuns :

X>9.18-1.8
X>7.38

7.3X+1.2 <21.98
7.3X <21.98-1.2
7.3X <20.86
X <20.86:7.3
X <2.85