1mark 2019 ACS CA1 P6 P6 / ACS / 2019 / CA1 – Q01 [1 mark] Question: Simplify 5a – 10 – 2a + 15. Solution: Similar Posts P6 / Nan Hua / 2019 / SA1 / Paper 2 – Q04 [2 marks] P6 / Raffles Girls / 2019 / SA1 / Paper 2 – Q12 [4 marks]