Answer: 
Step-by-step explanation:
1) Multply: 
Your new equation will be: -3*12
2) Multiply: 
Answer:
4n - 13
Step-by-step explanation:
(5+10n)-(18+6n)
Distribute the negative sign.
-1(18)=(-18) & -1(6n)=(-6n)
5+10n + (-18) + (-6)n
Combine like terms.
10n + (-6n) = 4n
(-18) + 5 = (-13)
4n + (-13)
or
4n - 13
Answer:
5(x-3)
Step-by-step explanation:
The word "SUM" means the answer to an "ADDITION".
"SUM" is always used with the word "AND" to indicate which numbers are being added.
The SUM of a number AND -3 is written as:
(
x
+
(
−
3
)
),
or (
x
-3
)
(where we have chosen the number to be x
.)
But we want FIVE of those sums; this means:
5 (
x
−
3
)
