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| 1. |
Solve the pare of linear equations 141x+93 y =189 and 93 x + 141 y=45 |
| Answer» 141x+93 y =189 .........(i)93 x + 141 y=45.........(ii)Add (i) and (ii), we get141x+93 y =189\xa093 x + 141 y=45_______________234x + 234 y= 234x + y=1........ (iii)Subtract\xa0(i) and (ii), we get141x+93 y =189\xa093 x + 141 y=45_______________48 x - 48 y=144 x - y = 3........ (iv)Adding (iii) and (iv), we get x + y=1+ x - y = 3____________2x = 4x = 2Put x = 2 in (iii)2 + y = 1y = 1 - 2 = -1 | |