Question: \[13 - 5\left( {x + 2} \right) = 2\left( {3x - 4} \right)\] Solution:
\( - 5x - 6x = - 4 + 13 - 10\) (line 2)
\(x = 1\) (line 3)
- Minus and plus should be minus.
(From question to line 1, \( - 5 \times 2 = - 10\).) - Plus should change to minus (i.e. didn’t multiply \(2\) with \(-4\)).
(In line 1, on LHS, it should be \(-10\).) - 1st line forget to \( \times 2\).
(In line 1, RHS should be \(6x - 8\).) - When you open bracket, you need to multiply \(-5\) throughout.
(When you expand the bracket on the LHS, you need to multiply \(-5\) throughout for \(x + 2\).) - \(13\) from line 1 should be \(-13\) in line 2.
("good comment")
