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Solve -x+4y=7; 5x+4y=7​

Answer» ONG>ANSWER:

X+4y=7

5x+4y=7. (SUBTRACTING)

- - -

....................

-4y= 0

y=-1/4

so, X=7-4y

=7-4x-1/4

=7+1

=8



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