Part A) −
12
b  +  6
c  +  18
Part B) -2b + 1c + 3
Part C) -4
Step-by-step explanation:
Part A)
Step 1:
-4b + -8b = -12b
Step 2:
8c + 2c = 6c
Step 3:
12 + 6 = 18
−
12
b  +  6
c  +  18
Part B)
GCF = 6
Step 1:
-12 divided by 6 = -2b
Step 2:
6 divided by 6 = 1c
Step 3:
18 divide by 6 = 3
-2b + 1c + 3
Part C)
Step 1: Subsitute 2 for b and 3 for c
(−
2 x 2
) Â + Â (1 Â x -3) + Â 3
Step 2: Multiply (−
2 x 2
) Â + Â (1 Â x -3) + Â 3
-4 + (-3) + 3
Step 2: Add -4 + (-3) + 3
-7 + 3 = -4
-4