12y-9-(3y-4)-4y+7 =
(9y-5)-4y+7 =
(5y-5)+7=
5y+2
Answer:
I'm confused. Is there more to the question?
dang this is hard for me, let me think
It is 20.9feet
Step-by-step explanation:
1. SSS; Triangle ABC is congruent to Triangle DEF; sorry there's no triangle symbol on here.
2. HL; CBA is congruent to ZYX; or ABC is congruent to XYZ
