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ICSE Class 9 Answered

3/x + 4y=7 5/x + 6y=13 solve the simultaneous linear equation by elimination method
Asked by pal.arpita002 | 18 Jun, 2018, 07:52: PM
answered-by-expert Expert Answer
begin mathsize 16px style 3 over straight x plus 4 straight y equals 7 fraction numerator begin display style 5 end style over denominator begin display style straight x end style end fraction plus 6 straight y equals 13 put space 1 over straight x equals straight t 3 straight t plus 4 straight y equals 7.......... left parenthesis 1 right parenthesis 5 straight t plus 6 straight y equals 13........... left parenthesis 2 right parenthesis left parenthesis 1 right parenthesis cross times 5 minus left parenthesis 2 right parenthesis cross times 3 straight t equals 5 comma space straight x equals 1 fifth straight y equals negative 2 end style
Answered by Arun | 19 Jun, 2018, 10:05: AM

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