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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
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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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संबंधित प्रश्न
For solving pair of equation, in this exercise use the method of elimination by equating coefficients :
`[5y]/2 - x/3 = 8`
`y/2 + [5x]/3 = 12`
For solving pair of equation, in this exercise use the method of elimination by equating coefficients :
2x − 3y − 3 = 0
`[2x]/3 + 4y + 1/2` = 0
If 2x + y = 23 and 4x - y = 19; find the values of x - 3y and 5y - 2x.
Solve for x and y:
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The value of expression mx - ny is 3 when x = 5 and y = 6. And its value is 8 when x = 6 and y = 5. Find the values of m and n.
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Solve the following simultaneous equations:
13a - 11b = 70
11a - 13b = 74
Solve the following pairs of equations:
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