1MA0 Higher June 2013 Paper 2 Q12
12
(a) Solve \(3(x - 2) = x + 7\) (3)
(b) Solve \(\dfrac{2 - y}{5} = 1\) (2)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(3x - 6 = x + 7\) \(2x = 13\) | 6.5 | 3 | M1 for \(3 \times x - 3 \times 2\) (\(= 3x - 6\)) or \(\frac{x}{3} + \frac{7}{3}\) seen M1 for correct method to isolate the terms in \(x\) or the number terms on opposite sides of an equation A1 for 6.5 oe |
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(2 - y = 1 \times 5\) | \(-3\) | 2 | M1 for intention to multiply both sides by 5 (to give \(2 - y = 1 \times 5\)) A1 cao |