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Solve the simultaneous linear equations: 2x + 5y = 11, 7x + 4y = 2

Mathematics
JAMB 1979

Solve the simultaneous linear equations: 2x + 5y = 11, 7x + 4y = 2
  • A. x = -8, y = 1
  • B. x = -2, y = 4
  • C. x = \(\frac{-34}{27}\), y = \(\frac{73}{27}\)
  • D. x = 7, y = -9
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Correct Answer: Option C
Explanation
2x + 5y = 11.......(i)

7x + 4y = 2.......(ii)

(i) x 7 \(\to\) 14x + 35y = 77.........(iii)

(ii) x 2 \(\to\) 14x + 8y = 4........(iv)

(iii) - (iv)

27y = 73

y = \(\frac{73}{27}\)

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts