Answer:
answer is <u>option A </u>
Step-by-step explanation:
Sure hope this helps uou :)
(b-10) +(b+10)=180
2b=180
b=90
c=b-10=80
d=b+10=100
Answer: u=7
-6= -2u+4(u-5)
-6= -2u+4u-20
-6= 2u-20
14= 2u
7=u
