Respuesta :
incorrect as - 12 - (- 12) = 0
note that -(- 12) is equivalent to + 12
-12 -(- 12) = - 12 + 12 = 0
Gaira made a mistake when substituting the value –7.5 in for x. She multiplied both terms of the expression by –7.5 when she should have only multiplied –3.8 by –7.5. The correct answer is 34.5.
