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Reducing Equations to Simpler Form

Solve equatio...

Question

Solve equation 8x+5y=9 and 3x+2y=4 by elimination method

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Solution

Dear student,
eqn. 1: 8x+5y=9
eqn. 2: 3x+2y=4
eqn. 1 $\times$ 3 - eqn. 2 $\times$ 8
=> 3(8x+5y)-8(3x+2y)=9x3-4x8
=>24x+15y-24x-16y=27-32
=> -y=-5
=> y=5

Put y=5 in eqn. 2
3x+2x5=4
=>3x+10=4
=> 3x=-6
=>x= -2
Regards

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Similar questions

Solve the following pairs of linear (simultaneous) equation by the method of elimination:

8 x + 5 y = 9

3 x + 2 y = 4

Q. Solve each of the following pairs of equations by the elimination method.

8 x + 5 y = 9

3 x + 2 y = 4

Solve the following pair of linear (simultaneous) equations by the method of elimination:

8 x + 5 y = 9

3 x + 2 y = 4

Q. Solve the following systems of linear equations by using the method of elimination by equating the coefficients:

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3 x + 2 y = 4

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Solve the above equations by elimination method.

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Reducing Equations to Simpler Form

Standard VIII Mathematics

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