Math, asked by malhaar1351, 2 months ago

Solve the simultaneous equations 3x –2y =5 and 2x + 5y = 16 by elimination by substitution.
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Answers

Answered by MaheswariS
1

\textbf{Given:}

\mathsf{3x-2y=5}

\mathsf{2x+5y=16}

\textbf{To find:}

\textsf{Solution of the given equations by}

\textsf{elimination method}

\textbf{Solution:}

\textsf{Consider,}

\mathsf{3x-2y=5}-----(1)

\mathsf{2x+5y=16}----(2)

\mathsf{(1){\times}2-(2){\times}3\;\implies}

\mathsf{6x-4y=10}

\mathsf{6x+15y=48}

\implies\mathsf{-19y=-38}

\implies\mathsf{y=\dfrac{-38}{-19}}

\implies\boxed{\mathsf{y=2}}

\mathsf{Put\;y=2\;in\;(2),\;we\;get}

\mathsf{2x+5(2)=16}

\mathsf{2x+10=16}

\mathsf{2x=16-10}

\mathsf{2x=6}

\mathsf{x=\dfrac{6}{2}}

\implies\boxed{\mathsf{x=3}}

\therefore\textbf{Solution is x=3 and y=2}

\textbf{Find more:}

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