SIR,
WHAT IS SIMULTANEOUS METHOD? 

Asked by kamleshsingh826 | 2nd Jun, 2016, 04:53: PM

Expert Answer:

T h e r e space i s space n o space s i m u l tan e o u s space m e t h o d. R a t h e r space w e space a r e space s o l v i n g space e q u a t i o n s space i n space t w o space v a r i a b l e s space s i m u l tan e o u s l y. C o n s i d e r space t h e space e q u a t i o ln s comma 3 x plus 2 y equals 11 space space space.. left parenthesis 1 right parenthesis 2 x plus 3 y equals 4 space space space space space.. left parenthesis 2 right parenthesis T o space s o l v e space t h e space a b o v e space s y s t e m space t h r o u g h space e l i m i n a t i o n space m e t h o d comma space w e space m u l t i p l y t h e space e q u a t i o ln space left parenthesis 1 right parenthesis space b y space 3 space a n d space t h e space e q u a t i o n space left parenthesis 2 right parenthesis space b y space 2 H e r e space w e space a r e space d o i n g space t h i s space s i m u l tan e o u s l y. open parentheses 1 close parentheses cross times 3 rightwards double arrow 9 x plus 6 y equals 33 space space space.. left parenthesis 3 right parenthesis open parentheses 2 close parentheses cross times 2 rightwards double arrow 4 x plus 6 y equals 8 space space space space space.. left parenthesis 4 right parenthesis S u b t r a c t i n g space e q u a t i o n space left parenthesis 4 right parenthesis space f r o m space e q u a t i o n space left parenthesis 5 right parenthesis comma space w e space h a v e comma 9 x plus 6 y equals 33 bottom enclose 4 x plus 6 y equals 8 space end enclose 5 x equals 25 rightwards double arrow x equals 5 S u b s t i t u t i n g space t h e space v a l u e space x equals 5 space i n space e q u a t i o n left parenthesis 1 right parenthesis comma space w e space h a v e comma 3 cross times 5 plus 2 y equals 11 rightwards double arrow 2 y equals 11 minus 15 rightwards double arrow 2 y equals negative 4 rightwards double arrow y equals negative 2 T h u s comma space t h e space s o l u t i o n space o f space t h e space s y s t e m space o f space e q u a t i o n s space i s space x equals 5 space a n d space y equals negative 2

Answered by Vimala | 3rd Jun, 2016, 10:51: AM

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