PLEASE SOLVE FOR X ASAP

1÷2 7/9 =x+4 2/5 x
I WILL AWARD BRAINLIEST

Need on this one asap im almost done with this subject

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"

Bring the fraction a/a-4 to a denominator of 16-a^2