Respuesta :
¹/₁₀(x+11) = -2(8-x)
multiply both side by 10
x + 11 = -20 (8-x)
x + 11 = -160 + 20x
11 + 160 = 20x-x
171 = 19x
x =9
multiply both side by 10
x + 11 = -20 (8-x)
x + 11 = -160 + 20x
11 + 160 = 20x-x
171 = 19x
x =9