Angie is solving the equation −x+7=−11
. Her solution is as follows.
−x+7
=
−11
−7
−7
Subtract 7 from both sides.
x
=
−18
−11−7=−18
.
In which part of the solution, if any, did Angie make an error?
(1 point)
Responses
She subtracted 7 from both sides.
She subtracted 7 from both sides.
She did not make any errors.
She did not make any errors.
She subtracted −11
and −7
incorrectly.
She subtracted negative 11 and negative 7 incorrectly.
She did not divide both sides by −1
.