Question

Stuck on this Algebraic Expression

r^6 / 3r^9

I kept the 3 but i wasn't sure if i was supposed to eliminate the variable and exponent all together or keep the r and just add the exponents.

Answer 1

assuming that "r^9" is in the denominator, you subtract the exponents

Answer 2

so

r^6/r^9 = r^(6-9) = r^(-3)

then what you do is use the rule that

x^(-k) = 1/(x^k)


so that means

r^(-3) is the same as 1/(r^3)

Answer 3

1/(3r^3)

Answer 4

@jim_thompson5910 its the numerator