Respuesta :
first multiply out the bracket -21e + 14f -28
then add that back to the expression with +6e - 2
new expression: -21e + 14f -28 +6e - 2
now you can simplify it.
-15e + 14f - 30
first multiply out the bracket -21e + 14f -28
then add that back to the expression with +6e - 2
new expression: -21e + 14f -28 +6e - 2
now you can simplify it.
-15e + 14f - 30