simplify 21v-6/(-7v^-6)

To simplify the expression 21v - 6/(-7v^-6), we can start by simplifying the fraction 6/(-7v^-6).

Since the exponent on v is negative, we can rewrite v^-6 as 1/v^6. Therefore, 6/(-7v^-6) becomes 6/(-7 * 1/v^6).

Next, we can simplify this expression further by multiplying the numerator and denominator by v^6. This gives us: (6 * v^6)/(-7 * 1).

Simplifying this fraction, the expression becomes: (-6v^6)/7.

Therefore, the simplified expression is 21v - 6v^6/7.