Answer:
Step-by-step explanation:
(2b+-7)+5(b+-3)
Multiply 5 throughout the second parentheses
(2b-7)+(5b-15)
Add 2b and 5b
7b-7-15
Subtract -7 and -15
7b-22
A
Because 6^3/6^6 is equivalent to 1/216.A is 1/36
Answer: look at the picture
Step-by-step explanation: Hope this help :D
63
420×.15= 63
