O-LevelMathematicsAlgebra and graphs4024/12 · May/June 2022 · Q246 Marks
Solve (2-5x)/(3x+10) = 3.
- (a)Solve (2-5x)/(3x+10) = 3.[3]
- (b)Express as a single fraction in its simplest form 3/(x-2) - 5/(2x+1).[3]
Mark scheme
Marking points from the official mark scheme (May/June 2022). The mark or mark type is shown in brackets.
- [3] (a) -2 M1 for 2 - 5x = 3(3x + 10) or better M1 for 2 - 30 = 9x + 5x or better
- [3] (b) (x+13)/((x-2)(2x+1)) or (x+13)/(2x²-3x-2) final answer B1 for 3(2x + 1) – 5(x – 2) oe isw B1 for denominator (x – 2)(2x + 1) oe isw
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