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Aflati IN ecuatia : 4x+5=3(x+1)

Răspuns :

4x+5=3(x+1)
4x=3x+3-5
4x-3x=-2
x=-2
4x+5=3x+3*1
4x+5=3x+3
4x-3x=3-5
x=-2
Coroana ?