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ICSE Class 9 Answered

x/7+y/3=5,x/2-y/9=6
Asked by Maninderpalmonty.hpyc | 07 Oct, 2018, 08:42: PM
Expert Answer
begin mathsize 16px style straight x over 7 plus space straight y over 3 equals space 5 space rightwards double arrow 3 straight x space plus space 7 straight y space equals space 105 space space space... left parenthesis straight i right parenthesis straight x over 2 space minus space straight y over 9 equals space 6 rightwards double arrow 9 straight x space minus space 2 straight y space equals space 108 space space space... left parenthesis ii right parenthesis Multiplyin left parenthesis straight i right parenthesis space by space 2 space and space left parenthesis ii right parenthesis space by space 7 comma space we space get 6 straight x space plus space 14 space straight y space equals space 210 space.... left parenthesis iii right parenthesis 63 straight x space space minus space 14 straight y space equals space 756 space space... left parenthesis iv right parenthesis Solve space equations left parenthesis iii right parenthesis space and space left parenthesis iv right parenthesis space simulataneously comma space we space get straight x space equals space 14 space and space straight y space equals space 9 end style
Answered by Yasmeen Khan | 08 Oct, 2018, 10:52: AM

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