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A
C
B
D
–4–3–2–11234–4–3–2–11234–4–3–2–11234–4–3–2–11234–4–3–2–11234–4–3–2–11234–4–3–2–11234–4–3–2–11234y=1.1x+1y=1.8xy=x+2y=3x3
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