Algebra 3
3 marks · NormalSolve the equation:
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x=3 (±0.05)
Common mistakes: Leaving equation unsimplified; sign error when multiplying both sides
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Marking points
M1 · 1 mark · Clears fractions by multiplying both sides by 3 (follow-through)
M2 · 1 mark · Correctly collects like terms/prepares to isolate x (follow-through)
A1 · 1 mark · Arrives at x = 3 (follow-through)
Worked solution
Multiply both sides by 3 to clear fraction:
Rearrange: