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intrebare 5x-7(x+1)=3(3-2x)

Răspuns :

5x - 7(x + 1) = 3(3 - 2x)

5x - 7x - 7 = 9 - 6x

5x - 7x + 6x = 9 + 7

4x = 16

x = 16 : 4

x = 4