Question

ਹੇਠ ਦਿੱਤੇ ਰੇਖੀ ਸਮੀਕਰਣ ਜੋੜੇ ਦਾ ਹੱਲ ਪਤਾ ਕਰੋ x+ y = 16, x – y = 4 ​

Answer 1

Question :

Find the solution of the following linear equation pairs

x + y = 16 , x - y = 4

Answer :

There we have many methods to solve this linear equations :

● Graphing

● Substitution method

● Elimination method

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i) Substitution method :

x + y = 16 ....(1)

x - y = 4.....(2)

let's have equation 1 as ,

x + y = 16

x = 16 - y .... (3)

Substitute (3) in (2)

x - y = 4

( 16 - y ) - y = 4

16 - 2y = 4

-2y = 4 - 16

y = -12 / -2

y = 6

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ii) Elimination method :

x + y = 16 , x - y = 4,

x + y = 16

x - y = 4

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2x = 20

x = 20 / 2

x = 10

_____________Be Delighted _____________

Answer 2

x + y = 16

x - y = 4

________

2x = 20

x = 10

x + y = 16

10 + y = 16

y = 6