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Solutia ecuatiei 2(x-3)+3(2x+1)=5x+4(x+2) x apartine lui Q

Răspuns :

2X-6+6X+3 = 5X+4X+8
2X+6X-5X-4X = 8+6-3
-X = 11
X = -11
2(x-3) + 3(2x+1) = 2x-6 + 6x+3 = 8x-3
5x+4(x+2) = 5x+4x+8 = 9x+8
8x-3=9x+8
-3-8 = 9x-8x
x=-11