CA Foundation P3 · Chapter 2 · Question 6 of 9
The solution of the simultaneous equations 3x + 4y = 26 and 5x − 2y = 13 is:
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: C) x = 4, y = 3.5
Explanation
Multiply the second equation by 2: 10x − 4y = 26. Adding to the first: 13x = 52, so x = 4. Substituting, 3(4) + 4y = 26 gives 4y = 14 and y = 3.5. Check: 5(4) − 2(3.5) = 20 − 7 = 13.
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