मराठी

For Solving Pair of Equation, in this Exercise Use the Method of Elimination by Equating Coefficients : 1/5( X - 2 ) = 1/4( 1 - Y ) 26x + 3y + 4 = 0 - Mathematics

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प्रश्न

For solving pair of equation, in this exercise use the method of elimination by equating coefficients :
`1/5( x - 2 ) = 1/4( 1 - y )`
26x + 3y + 4 = 0

बेरीज

उत्तर

`1/5( x - 2 ) = 1/4( 1 - y )`
⇒ 4( x - 2 ) = 5( 1 - y )
⇒ 4x - 8 = 5 - 5y
⇒ 4x + 5y = 13                       .....(1)
26x + 3y = - 4                         .....(2)

Multiplying equation no. (1) by 3 and(2) by 5.
12x + 15y = 39                       .....(3)
130x + 15y = - 20                   .....(4)

Subtracting equation (4) from (3)
                12x + 15y = 39                      
        -     130x + 15y = - 20  
               -         -           +     
                        - 118 x = 59
                                 x = `-59/118`

                                 x = `-1/2`
From (1)
`4(-1/2)` + 5y = 13
5y = 13 + 2
y = 3

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Methods of Solving Simultaneous Linear Equations by Elimination Method - Method of Elimination by Equating Coefficients
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पाठ 6: Simultaneous (Linear) Equations (Including Problems) - Exercise 6 (B) [पृष्ठ ८१]

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सेलिना Concise Mathematics [English] Class 9 ICSE
पाठ 6 Simultaneous (Linear) Equations (Including Problems)
Exercise 6 (B) | Q 4 | पृष्ठ ८१
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