We have expanded and simplified some algebraic expressions below to their simplest forms.
(i) Check each of the simplifications and see if there is a mistake.
(ii) If there is a mistake, try to explain what could have gone wrong.
(iii) Then write the correct expression.
\(5(x – 2) + 3(x + 9)\)
\(= 5x – 2 + 3x + 9\)
\(= 8x + 7\)
Answer:
(i) The simplification is .
(ii) The reason is .
(iii) \(5(x – 2) + 3(x + 9)\) \(=\) .