Is the diction appropriate in the following sentence? "four years later, he met and married martha dandridge custis, a young widow whose husband had died." a. no, it is too informal. b. no, it is too opinionated. c. no, it has redundant information. d. yes, it is correct as it is written.

Yes, it is correct.  

It is not informal or opinionated nor has needless comments. :)

Please thank, rate, and mark Brainliest if I helped!

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4