Respuesta :
6x - 42 = 10x + 40
6x - 82 = 10x
-82 = 4x
-82 / 4 = -20.5
x = -20.5
6(-20.5 - 7) = -165
10(-20.5 + 4) = -165
6x - 82 = 10x
-82 = 4x
-82 / 4 = -20.5
x = -20.5
6(-20.5 - 7) = -165
10(-20.5 + 4) = -165