Question

0if 3y+9x=54 and 28x/13y=140/39 then what is the value of y-x

Answer 1

28x / 13y = 140/39


=> 28x = 140

and

13y = 39

=> 28x = 140



=> x = 140/28 = 5

=> y = 39/13 = 3

.
. . y - x = 3 - 5 = -2



and



3 × 3 + 9 × 5 = 9 + 45 = 54



hence proved.




AND PLZ MARK IT AS BRAINLEIST.



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