2an+3 by = 9+26 ; 392 42 by = 298 +6some by cross multiplication metho – InterviewSolution

1.

2an+3 by = 9+26 ; 392 42 by = 298 +6some by cross multiplication method

Answer»

2ax + 3by = a + 2b⇒2ax = a+2b – 3by⇒x = (a+2b-3by) / 2a

Put x in the second equation3ax + 2by = 2a+b⇒ 3a((a+2b-3by) / 2a) + 2by = 2a+b

By solving it, we get

y = (4b-a)/5bx = (a+2b-3by) / 2a x = (4a-b)/5a

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