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7 x - 4 = 2x +6 ajutor va rog dar repede?

Răspuns :

7x-4=2x+6;
7x-2x=6+4;
5x=10;
x=10/5;
x=2;
7x-4=2x+6

7x-2x-4=2x-2x+6

7x-2x-4=6

7x-2x=6+4

5x=10

5x:5=10:5

=>x=10:5=2