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1. |
If \(3x+6y+9z = \dfrac{20}{3}, 6x+9y + 3z = \dfrac{17}{3}\) and \(18x+ 27y - z = \dfrac{113}{9}\), then what is the value of \(75x+113y \ ?\) |
A. | 163/3 |
B. | 143/6 |
C. | 218/9 |
D. | 311/3 |
Answer» B. 143/6 | |