4MA0 Higher June 2015 Paper 3R Q4
4 Solve \(7x - 2 = 1 - 3x\)
Show clear algebraic working.
(3)
| Scheme | Marks |
|---|---|
| Eg. \(7x + 3x = 1 + 2\) | M1 |
| \(10x = 3\) | M1 |
| \(\dfrac{3}{10}\) oe | A1 |
| (3) |
Notes
M1: for correct rearrangement with \(x\) terms on one side and numbers on the other or
for correct simplification of either \(x\) terms or numbers on one side in a correct equation eg. \(10x - 2 = 1\) ; \(7x = 3 - 3x\)
M1: award also for \(-10x = -3\)
A1: depends on the award of at least M1 ;
If no correct algebraic working then award no marks