Question

please answer the second question step by step ​

Answer 1

Answer:

x+y=9

9(x+y)=9

reversing

y+x=9

2(y+x)=9

solving

y=9/2x

x=2/4

Answer 2

Answer:

10x + y=9

Step-by-step explanation:

9(10x +y)= 2(x + 10y)

90x + 9y = 2x + 20y

88x - 11y= 0

8x -y = 0

8x = y

then, 10x + 8x = 9

18x = 9

x= 1/2

and, y =8 *1/2

y = 4

so, therefore

no is 54 or 45...

answer is D

none of these.