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2x/3+3y/4=7,5x-3y=18 simultanious linear eqution

Answer»

\large \green{ \underline{answer}} \\  \\ \large \implies \therefore \orange{ \boxed{ \:  \:  \: x =6 \:  \:  \:  \:  \: and \:  \:  \:  \: y = 4 }} \\  \\ \large \implies \orange{ \underline{step \:  -  \: by \:   -  \: step \:  \: \:  explanation}} \\  \\ \large \implies{1) =  \frac{2x}{3} +  \frac{3y}{4} = 7......... (1) } \\  \\ \large \implies{2) = 5x - 3y = 18........(2)} \\  \\ \large \implies{we \:  \: can \:  \: write \:  \: as \:  \: equation \:( 1)} \\  \\ \large \implies{8x + 9y = 84....(1)} \\  \\ \large \implies{5x - 3y = 18....(2)} \\  \\ \large \implies{multiply \:  \: equation \:  \: (1) \:  \: by \:  \: 1 \:  \: } \\  \\ \large \implies{multiply \:  \: equation \:  \: (2) \: by \:  \: 3} \\  \\ \large \implies \therefore{equation \:  \: \: will \:  \: be \:  \:  \: written \:  \: as} \\  \\ \large \implies{8x + 9y = 84...(1)} \\  \\ \large \implies{15x - 9y = 54....(2)} \\  \\ \large \implies{23x = 138} \\  \\ \large \implies{x = 6} \\  \\ \large \implies{put \:  \: the \:  \: value \:  \: of \:  \: x \:  \: in \:  \: equation \:  \: (2)} \\  \\ \large \implies{y = 4} \\  \\ \large \implies \therefore \green{ \boxed{ \:  \: x = 6 \:  \:   \:  \: and \:  \:  \: y = 4}}



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