Answer:
21 + 3a
Step-by-step explanation:
3 (7+a)
distribute 3 into parentheses:
21 + 3a
I think in commutative properties of multiplication:
70 x 6000 = 70 x 6000
420,000 = 420,000
I don't know associative properties, only commutative properties. Sorry :(
Answer:
-25+12 is less
Step-by-step explanation
1st picture
-25+12=-13
40+-63=-23
2nd picture
Negative
Positive
Negative Negative
To find the answers just simply do the number in a calculator for example -6+64 put that in a calculator and it will help you. figure our number 5
Given that

<u>Find the nth term:
</u>



<u>Find the 100th term:</u>

<u>Find the Sum:</u>