Question

5(1 – y)+4(1+ y) ÷1-2y=9
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Answer 1

Answer:

5-5y+4+4y/1-2y=9

5+4-5y+4y/1-2y=9

9-y/1-2y=9

(9-1)(-y-2y)=9

8×-3y=9

-3y=9/8

y=9/8×1/3

y=9/24

y=3/8

Answer 2

$\frac{5(1 - y) + 4(1 +y)}{1 - 2y} = 9 \\ \\ \frac{5 - 5y + 4 + 4y}{1 - 2y} = 9 \\ \\ 9 - y = 9(1 - 2y) \\ 9 - y = 9 - 18y \\ - 18y + y = 9 - 9 \\ - 17y = 0 \\ y = \frac{0}{ - 17} \\ y = 0$