Question

5
न 6 समीकरण को हल कीजिए (विलोपन विधि से)
4x-5y= 20 और 3x+5y=15​

Answer 1

SOLUTION

TO DETERMINE

Solve using the deletion method

4x - 5y = 20

3x + 5y = 15

EVALUATION

Here the given system of equations are

4x - 5y = 20 - - - - - (1)

3x + 5y = 15 - - - - - (2)

Adding Equation 1 & Equation 2 we get

7x = 35

⇒ x = 5

Putting the value of x in Equation 1 we get

( 4 × 5 ) - 5y = 20

⇒ 20 - 5y = 20

⇒ - 5y = 0

⇒ y = 0

FINAL ANSWER

Hence the required solution is

x = 5 , y = 0

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Answer 2

Given: 4x-5y= 20 और 3x+5y=15​

To Find: समीकरण को हल कीजिए (विलोपन विधि से)

Solve by elimination method

Solution:

4x-5y= 20    Eq1

3x+5y=15​       Eq2

Eq1 + Eq2

=> 7x = 35

=> x = 5

4 * Eq2  - 3 Eq1

=> 12x + 20y  - ( 12x - 15y)  = 60 - 60

=>  35y = 0

=> y = 0

x = 5  , y = 0

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