Write a sentence using the word "dynasty" that clearly shows you know the meaning of the word. (THIS IS FOR HISTORY ANCIENT CHINA) NEED HELP ASAP

the chang dynasty died in about 30 years

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

its probably to later but whats the question