If 1x + 2y = 26 and 4x + 3y = 59, what is x + y?
Answer and explanation
Correct answer: C. 17
- Step 1: Solve the pair by elimination: x = 8, y = 9.
- Step 2: x + y = 17.
Answer
17.
Why not the others: 8, 9 and 72 do not fit.
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