4MA0 Higher January 2012 Paper 4 Q3
3 Solve \(7x - 5 = 3x + 2\)
Show your working clearly.
(3)
| Scheme | Marks |
|---|---|
| \(4x = 7\) or \(4x = 2 + 5\) or \(7x - 3x = 7\) oe or \(4x - 7 = 0\) oe | M2 |
| \(1\frac{3}{4}\) oe | A1 |
| (Total 3 marks) |
Notes
M2: for correct rearrangement with \(x\) terms on one side and numbers on the other AND collection of terms on at least one side
or for \(4x - 7 = 0\) oe
M1 for \(7x - 3x = 2 + 5\) oe
ie correct rearrangement with \(x\) terms on one side and numbers on the other
A1: Award full marks for a correct answer if at least 1 method mark scored