2x-3y=7,6x+9y=11 solve by elimination method

It is elimination method it belongs to the pair of linear equations in two variables class10 question
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1 Answer

2x - 3y = 7

6x + 9y = 11

multiply the top equation by 3

6x - 9y = 21

6x + 9y = 11

add them together

12x = 32

x = 32/12

x = 8/3

2x - 3y = 7

6x + 9y = 11

mutiply the top equation by -3

-6x + 9y = -21

6x + 9y = 11

add them together

18y = -10

y = -10/18

y = -5/9
by Level 13 User (103k points)

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