PRC-2 · Chapter 1 · Question 38 of 45
Solve the following system of linear equations for x and y: x + y = 10 and x - y = 2.
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: B) x = 6, y = 4
Explanation
Adding the two equations: (x + x) + (y - y) = 10 + 2 -> 2x = 12 -> x = 6. Substituting x=6 into the first equation: 6 + y = 10 -> y = 4.
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