Answer:
b=10
Step-by-step explanation:
2b=20
divide both sides by 2
b=10
I'm pretty sure its 127.8
Answer:
45
Step-by-step explanation:
If you write it out it will look like this, 2x+45+x=180
3x+45=180
3x+45=180
-45 -45
3x=135
/3 /3
x=45
0.86z would be the answer!