Question

1. (i) 5x - 6y = 2, 6x - 5y = 9 solve by
elimination method
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Answer 1

Step-by-step explanation:

the answer will be

5x-6y=2

6x-5y=9

11x-11y=11

x-y=1. ........(1) by adding

x-y=7........ ..(2) by subtracting

2x=8

x=4

4-y-1=0

-y-3=0

y=-3

OK friend this is urs answer OK

Answer 2

Answer: 6x-5y = -2 ---------(i)

5x- 6y = -9--------(ii)

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USING SUBSTITUTION METHOD:

From equation (i)

6x-5y= -2

x = -2+5y/6-----(iii)

Putting x = -2+5y/6 in equation (ii).

5x-6y = -9

5(-2+5y/6) -6y = -9

-10+25y-36y = -54

-11y = -54+10

-11y = -44

y = 4

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Putting y = 4 in eq.(iii)

x = -2+5y/6

x = -2+5(4)/6

x = -2+20/6

x = 18/6

x = 3

So , x = 3 & y = 4

Step-by-step explanation:

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