Question

x+y=7;12x+5y=7 by cross multiplication method​

Answer 1

Answer:

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Answer 2

Answer:

x+y = 7 ......(1)

x= 7-y .

5x+12y = 7 .....(2)

putting value of x in equation 2.

5×(7-y) + 12y = 7 .

35- 5y +12y = 7 .

7y = -28.

y= -4 .

putting value of y in equation 1 we get

x+y=7 .

x+(-4) =7

x= 7+4 = 11.

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