Question

What is the value of x-y. If 4x+5y=9 and 5x+4y= 11.




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Answer 1

Answer:

Step-by-step explanation:

ok so first lets find y.

so

4x+5y=9

5y=9-4x

y=5(9-4x)

y=45-20x

now lets put equation 1 into equation 2 :-

5x+ 4(45 - 20x)= 11

5x +180 - 80 x = 11

5x- 80x= -180 +11

-75x=-169

x= -169/ - 75

i think now u can find the answer .

plz mark my answer the brainliest :)