Answer:
all incorrect
Step-by-step explanation:
I did it in my head so I'm sorry if wrong
Ok so assuming that the 'x' means multiply and not 'x' as in placeolder we do
PEMDAS
parenthaseees
exponents
multipilcation or division
additon or subtraction
parethasees simplify first
(8+7)=15
(9-3)=6
now we have
2x(15)-6/2x(6)
multiply
2x15=30
6/2x6=36/2=18
now we have
30-18
12
answer is 12
S R
———————————————————-
1. b is midpoint of 1. given
AC
2. AB = BC 2. if midpoint, then two
congruent lines
3. AB = EF 3. given
4. BC = EF 4. transitive property