JACIARALINS1970GO JACIARALINS1970GO Matemática Respondido A) 7x - 1 = 13 7x = 13 + 1 7x = 14 X = 14 7 X = 2 B) 6x = 2x + 28 6x - 2x = 28 4x = 28 X = 28 4 X = 7 C) 5x - 2 = 18 + 3x 5x - 3x = 18 - 2 5x - 3x = 20 2x = 20 X = 20 2 X = 10 D) 6x - 10 = 2x + 14 6x - 2x = 14 + 10 6x - 2x = 24 4x = 24 X = 24 4 X = 6 E) 12x - 4 = 10x + 3 12x - 10x = 4 + 3 12x - 10x = 7 2x = 7 X =7 2 F) - x - 2x - 4 = 11 - x - 2x = 11 + 4 - x - 2x = 15 - 3x = 15 X = 15 -3 X = -5