-14 + 6b + 7 - 2b= 1 + 5b
combine like terms
-7 +4b = 1 + 5b
subtract 4b from each side
-7 + 4b -4b = 1 + 5b -4b
-7 = 1 + b
subtract 1 from each side
-7 -1 = 1-1 + b
-8 = b
This is 6C2
= 6!
-------- = 6*5 / 2*1 = 15
2! 4!
Check the picture below.
keeping in mind that a cube is just a rectangular prism with all equal sides.
Answer:
6.
Step-by-step explanation: