Biology, asked by pragati8094, 7 months ago

solve the given question.. it's simultaneous equations
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Answered by aleenbarbie
0

1. \frac{2xy}{x + y} = \frac{3}{2}

2(2xy)=3(x+y)^{}

4xy=3x+3y^{}

4=\frac{3x + 3y}{xy}

4=\frac{3x}{xy} +\frac{3y}{xy}

4=\frac{3}{y} +\frac{3}{x}(1)^{}

   \frac{xy}{2x-y} =\frac{-3}{10}

10(xy)=-3(2x-y)^{}

10xy=-6x+3y^{}

10=\frac{-6x + 3y}{xy}

10=\frac{-6x}{xy} +\frac{3y}{xy}

10=\frac{-6}{y} +\frac{3}{x}(2)^{}

(1) - (2)^{}

  4=\frac{3}{y} +\frac{3}{x}

-^{} 10=\frac{-6}{y} +\frac{3}{x}

-6=\frac{9}{y}

y=\frac{-9}{6}

y=\frac{-3}{2}

  4=\frac{3}{y} +\frac{3}{x}

4=\frac{3}{\frac{-3}{2} } +\frac{3}{x}

4 = \frac{6}{-3} + \frac{3}{x}

4=-2 +\frac{3}{x}

4+2=\frac{3}{x}

\frac{3}{x}=6

x=\frac{6}{3}

x=2

x=2

y=\frac{-3}{2}

2. \frac{3}{2x} + \frac{2}{3y} = \frac{-1}{3}

\frac{6y + 4x}{6xy} = \frac{-1}{3}

3(6y+4x)=-1(6xy)^{}

3(6y+4x)=-6xy^{}

6y+4x=\frac{-6xy}{3}

6y+4x=-2xy^{}

2(3y+2x)=-2xy

3y+2x=\frac{-2xy}{2}

3y+2x=-xy

\frac{3y+2x}{xy} = -1

\frac{3y}{xy} +\frac{2x}{xy} = -1

\frac{3}{x} + \frac{4}{y} = -1(1)^{}

  \frac{3}{4x} + \frac{1}{2y} = \frac{-1}{8}

\frac{6y + 4x}{8xy} = \frac{-1}{8}

8(6y+4x)=-1(8xy)^{}

8(6y+4x)=-8xy^{}

6y+4x=\frac{-8xy}{8}

6y+4x=xy^{}

2(3y+2x)=xy^{}

3y+2x=\frac{xy}{2}

\frac{3y+2x}{xy} = 2

\frac{3y}{xy} +\frac{2x}{xy} = 2

\frac{3}{x} +\frac{2}{y} =2(2)^{}

(1)-(2)^{}

  \frac{3}{x} + \frac{4}{y} = -1

-\frac{3}{x} +\frac{2}{y} =2

\frac{2}{y} = -3

y=\frac{-3}{2}

  \frac{3}{x} + \frac{4}{y} = -1

\frac{3}{x} + \frac{4}{\frac{-3}{2} } = -1

\frac{3}{x} + \frac{8}{-3} = -1

\frac{-9+8}{-3x} = -1

\frac{-1}{-3x} = -1

-3x= \frac{-1}{-1}

-3x=1

x=\frac{-1}{3}

x=\frac{-1}{3}

y=\frac{-3}{2}

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