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140x - 230y = -511 and -330x + 149y = -32 |
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Answer» 140x - 230y = - 511 ....(i) -330x + 149y = -32 ......(ii) By applying 33 x (1) + 14 x (2) , we obtain (4620x - 7590y) + (-4620x + 2086y) = -16863 - 448 ⇒ - 5504 y = -17311 ⇒ \(y = \frac{17311}{5504} \approx 3.145\) From (i), we get 140x = 230y - 511 = 230(3.145) -511 = 212.35 ⇒ \(x \approx \frac{212.35}{140}\approx 1.517\) Hence, x \(\approx\) 1.517 & y \(\approx\) 3.145 is solution of given system. |
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