1.8n-1.5n=-6.2-4
3.3n=-10.2
n=-3.09
Refer to the edited figure.
Triangles ABC and A'B'C' are similar because of AAA.
Also,

Therefore
ΔA'B'C' is 1/3 the size of ΔABC.
This means that the scale factor from ΔABC to ΔA'B'C' is a 3-factor reduction.
Answer: reduction; one-third.
The dilation is a reduction.
The scale factor of the dilation is one-third.
Find a common denominator first
3/8 x 3/3 =9/24
1/3x 8/8 =8/24
8/24+9/24=17/24