Question

If 2x(x-y)=54 and x=9, then y=

A. 6
B. 3
C. 2
D. 1

Answer 1

Answer:

A. 6

Step-by-step explanation:

$2x(x - y) = 54 \\ 2(9)(9 - y) = 54 \\ 18(9 - y) = 54 \\ 9 - y = \frac{54}{18} \\ 9 - y = 3 \\ y = 9 - 3 \\ y = 6$

Answer 2

Im guessing it’s A but I’m not really sure hopefully it’s right