All you have to do is combine like terms. 2c and (-c) are like terms (-5b) and (-b) are like terms and a is a term. So, 2c combined with (-c) is C. (-5b) and (-b) combined is (-6b). Since a doesnt need to be combined with anything, you leave it as it is so your answer will then be c - 6b + a (this is the answer assuming that there is a + in front of the a. If there is a - sign, then just change your +a to -a at the end
B) D) and probably C) I’m not sure
Answer:
C.
Explication:
It wants you to determined which angle is bigger out of two of the angles.
Angle A. is 3.9 inches plus 7.9 inches
Angle B. is 3.9 inches plus 4.2 inches
Angle C. is 7.9 inches plus 4.2 inches
10x + 9
because the -6x and positive 6x cancel out and all you have left is 2+2+5 and 10x
