Question

125^(x+3)=25^(2x+3)=5^(3y), then x+2y=?

Answer 1

(5^3)^(x+3)=(5^2)(2x+3=5^3y

5^(3x+8)=5^(4x+6)=5^3y

By comparing

3x+8=3y
4x+6=3y


Subtracting these eqns

x-2=0
x=2

3y=6+8=14
y=14/3

x+2y= 2+28/3= 34/3