What does this mean and what is the answer?

-3(-7)​

-3 * -7 = 21

Step-by-step explanation:

-3(-7) = -3 * -7

Multiply

Remember: negative * negative = positive

So -3*-7 = 21

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-Chetan K

-10

Step-by-step explanation:

Look at it this way. You borrowed 3 dollars and then you borrowed another 7 dollars. Now you owe 10 dollars.

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

15 units use socratic

step-by-step explanation: 15 units