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ICSE Class 9 Answered

4x +5y =13 26x+3y =4   Please solve  using cross multiplication method... Fast
Asked by krcraju1973 | 15 Jun, 2019, 11:09: AM
answered-by-expert Expert Answer
4 straight x space plus space 5 straight y space minus space 13 space equals space 0 26 straight x space plus space 3 straight y space minus space 4 space equals space 0 fraction numerator straight x over denominator 5 open parentheses negative 4 close parentheses minus open parentheses negative 13 close parentheses open parentheses 3 close parentheses end fraction equals fraction numerator negative straight y over denominator 4 open parentheses negative 4 close parentheses minus open parentheses negative 13 close parentheses open parentheses 26 close parentheses end fraction equals fraction numerator 1 over denominator 4 open parentheses 3 close parentheses minus open parentheses 5 close parentheses open parentheses 26 close parentheses end fraction straight x over 19 equals fraction numerator negative straight y over denominator 322 end fraction equals fraction numerator 1 over denominator negative 118 end fraction straight x equals fraction numerator negative 19 over denominator 118 end fraction straight y equals 161 over 59
Answered by Arun | 15 Jun, 2019, 01:29: PM

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