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25. 1*2x+3y=7; 6x-5y=11 fund solution by three methods substitution elevation cross multiplication 2*3-5y=20;7x+2y=17 |
| Answer» 25. 1*2x+3y=7; 6x-5y=11 fund solution by three methods substitution elevation cross multiplication 2*3-5y=20;7x+2y=17 | |