Math, asked by afreen32189, 1 month ago

find the value of x and y 5x+3y=2 2x+2y=5​

Answers

Answered by NewGeneEinstein
1

Step-by-step explanation:

\\ \tt{:}\twoheadrightarrow 5x+3y=2\dots(1)

\\ \tt{:}\twoheadrightarrow 2x+2y=5\dots(2)

  • Let's use substitution method
  • From eq(1)

\\ \tt{:}\twoheadrightarrow 5x+3y=2

\\ \tt{:}\twoheadrightarrow 5x=2-3y

\\ \tt{:}\twoheadrightarrow x=\dfrac{2-3y}{5}\dots(3)

  • Substitute the value of x in eq(2)

\\ \tt{:}\twoheadrightarrow 2x+2y=5

\\ \tt{:}\twoheadrightarrow 2(\dfrac{2-3y}{5})+2y=5

\\ \tt{:}\twoheadrightarrow \dfrac{4-6y}{5}+2y=5

\\ \tt{:}\twoheadrightarrow \dfrac{4-6y+10y}{5}=5

\\ \tt{:}\twoheadrightarrow \dfrac{4+4y}{5}=5

\\ \tt{:}\twoheadrightarrow 4+4y=25

\\ \tt{:}\twoheadrightarrow 4y=25-4

\\ \tt{:}\twoheadrightarrow 4y=21

\\ \tt{:}\twoheadrightarrow y=\dfrac{21}{4}

  • Substitute the value in eq(3)

\\ \tt{:}\twoheadrightarrow x=\dfrac{2-3y}{5}

\\ \tt{:}\twoheadrightarrow \dfrac{2-\dfrac{21}{4}}{5}

\\ \tt{:}\twoheadrightarrow \dfrac{\dfrac{8-21}{4}}{5}

\\ \tt{:}\twoheadrightarrow \dfrac{\dfrac{-13}{4}}{5}

\\ \tt{:}\twoheadrightarrow x=\dfrac{-13}{20}

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