Question

雲雲

這題求解😥

10000
AABC DE II AC EF || AB AD=3x+1· DB = 6x-3-
21
AF 12 FC=8 • EU x=_ _8_
(10%)
1
10%)
AD=AB=AF FC
(3X+1): (3X+) +6x-3)=12=8
(3x+1)=(x-2)=3=2
27X-6=6X+2
OBDICE BECF
AD÷AF=AE: DE
4= 9 = AE÷ 5
9₁€ = 20
21x=8
X = 21
8
AD=4 AF =9* AE &•
AD AE AB AC
= AE AF
4: AE = AE = 9
443
超

等高比例 國三數學