1MA0 Higher June 2017 Paper 1 Q17
17 Solve \(\dfrac{x + 1}{3} + \dfrac{2x + 5}{4} = 2\) (4)
| Answer | Mark | Notes |
|---|---|---|
| 0.5 | 4 | M1 for identifying a common denominator in a correct expression or equation eg \(\dfrac{4(x + 1)}{12} + \dfrac{3(2x + 5)}{12}\) (= 2) M1 (dep on M1) for expanding both brackets in an equation eg \(\dfrac{4x + 4}{12} + \dfrac{6x + 15}{12} = 2\) eg \(4x + 4 + 6x + 15 = 12 \times 2\) M1 (dep on M1) for isolating “like terms” on each side of an equation eg \(4x + 6x = 24 - 15 - 4\) A1 for 0.5 oe |