Question

9-x=2x me ajudem pfv resposta completa :D

Answer 1

9 - x = 2× - x -2x = -9 -3x = -9 X = -9/-3 (menos 9 sobre menos 3) X = 3

Answer 2

9 - x = 2x
9 = 2x + x
9 = 3x
x = 9 ÷ 3
x = 3