Question

13x_11y=16 and 11x_13y =59 . solve by additon method​

Answer 1

13x-11y=16*(11)....(1)

11x-13y=59*(13).... (2)

_________________

143x-121y=176

143x-169y=767

-_____+_____-________

0. 48y=-591

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y=591/48

y= -12.3

put y in equation (1)

13x-11y=16

13x-11(-12.3)=16

13x+135.3=16

13x=16-135.3

13x=119.3

x=119.3/13

x=9.1