Question

Could you please help me and my grandson with this problem? Thank you.

Answer 1

SOLUTION:

Case: Simple linear equations

Given: x + 14 = -28

Initial method:

$\begin{gathered} x+14=-28 \\ (x+14)-14=-28-14 \\ x=-14 \end{gathered}$

Spotting the mistake:

$-28-14\ne-14$

Correcting the mistake:

$\begin{gathered} x+14=-28 \\ Subtracting\text{ 14 from both sides} \\ (x+14)-14=-28-14 \\ x+14-14=-28-14 \\ x=-42 \end{gathered}$

Final answer:

x= -42