x + 2y = 3
4^(x - 2.5)/4^3y = 2
x = 3 - 2y
4^(3 - 2y - 2.5)/4^3y = 2
4^(0.5 - 2y - 3y) = 2
4^(0,5 - 5y) = 2
2^(1 - 10y) = 3
1 - 10y = 1
y = 0
x = 3
ответ 3;0
x + 2y = 3
4^(x - 2.5)/4^3y = 2
x = 3 - 2y
4^(3 - 2y - 2.5)/4^3y = 2
4^(0.5 - 2y - 3y) = 2
4^(0,5 - 5y) = 2
2^(1 - 10y) = 3
1 - 10y = 1
y = 0
x = 3
ответ 3;0