Tìm x: (3x – 1) . (2x + 7) – (x + 1) . (6x – 5) = 16 (10x + 9) . x – (5x – 1) . (2x + 3) = 8 x . (x + 1) . (x + 6) – x ³ = 5x
Tìm x: (3x – 1) . (2x + 7) – (x + 1) . (6x – 5) = 16 (10x + 9) . x – (5x – 1) . (2x + 3) = 8 x . (x + 1) . (x + 6) – x ³ = 5x