Solve the system of equations. \begin{aligned} & 12x-5y = -20 & y=x+4 \end{aligned} 12x−5y=−20 y=x+4 x=x=x, equals y=y=y, equals

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.