1MA0 Higher March 2013 Paper 1 Q17
17 Solve \(\dfrac{4x - 1}{5} + \dfrac{x + 4}{2} = 3\) (3)
| Answer | Mark | Notes |
|---|---|---|
| \(\dfrac{12}{13}\) | 3 | M1 for multiplying throughout by 10 oe or writing LHS as a single fraction e.g \(2(4x - 1) + 5(x + 4) = 3 \times 10\) or \(\dfrac{2(4x - 1) + 5(x + 4)}{10}\) or \(\dfrac{2(4x - 1)}{10} + \dfrac{5(x + 4)}{10}\) M1 (dep) for a complete correct method to obtain linear equation of the form \(ax = b\) (condone one arithmetic error in multiplying out the bracket) A1 for \(\dfrac{12}{13}\) oe (decimal equivalent is 0.923…) |