Question

the solution of 5x+2y=7 and 6x-5y=38​

Answer 1

Answer:

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Step-by-step explanation:

5x + 2y = 7 ------------------ I

6x - 5y = 38 ----------------- II

multiple both eqn I by 5

n eqn II by 2

:. 25x + 10y = 35 -------------- III

12x - 10y = 76 ----------------IV

Add eqn III n IV

:. 25x + 10y = 35

+ 12x - 10y = 76

37x + 0 = 111

:. 37x = 111

:. x = 111

37

:. x = 3

substitute value of x in eqn I

:. 5(3) + 2y = 7

:. 15 + 2y = 7

:. 2y = 7 - 15

:. 2y = 8

:. y = 8

2

:. y = 4

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