Math, asked by manglamehra007, 7 months ago

4x-5y=172 ; 5x-4y=251 find x and y​

Answers

Answered by MaheswariS
3

\underline{\textbf{Given:}}

\textsf{Equations are}

\mathsf{4x-5y=172}

\mathsf{5x-4y=251}

\underline{\textbf{To find:}}

\textsf{The value of x and y}

\underline{\textbf{Solution:}}

\textsf{We apply Elimination method to solve the given equations}

\mathsf{4x-5y=172} ----(1)

\mathsf{5x-4y=251} -----(2)

\mathsf{Adding\;(1)\;and\;(2),}

\mathsf{9x-9y=423}

\mathsf{x-y=47}-------(3)

\mathsf{(1)-(2)\implies}

\mathsf{-x-y=-79}-------(4)

\mathsf{Adding\;(3)\;and\;(4)}

\mathsf{-2y=-32}

\mathsf{y=\dfrac{-32}{-2}}

\implies\boxed{\mathsf{y=16}}

\mathsf{Put\;y=16\;in\;(3),}

\mathsf{x-16=47}

\mathsf{x=47+16}

\implies\boxed{\mathsf{x=63}}

\therefore\textbf{x=63\;\;and\;\;y=16}

\underline{\textbf{Find more:}}

11. Solve 2a + 3b = 18 and 3a + 2b =17​

https://brainly.in/question/14761699

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