Question

Simplify. 7-1(-1 is exponent)+7-2(same)/ 7-3

Answer 1

\[\large
\frac{7^{-1}+7^{-2}}{7^{-3}} = (7^{-1}+7^{-2}) * 7^3 = \\ \large 7^{-1}*7^3 + 7^{-2}*7^3 = 7^2+7^1 = 49+7 = 56
\]

Answer 2

What happnes to the 7 3?

Answer 3

\(\large 7^{-3}\) in the denominator will become \(\large 7^{3}\) when brought to the numerator.

Answer 4

\[
\large \frac{1}{a^{-m}} = a^{m} \\
\large \frac{1}{a^m} = a^{-m} \\
\]

Answer 5

no but what happnes to it it just sisappers soesnt do anything ot the other 7s

Answer 6

disappears

Answer 7

\[
\large
\frac{7^{-1}+7^{-2}}{7^{-3}} = (7^{-1}+7^{-2}) * 7^3 =
7^{-1}*7^3 + 7^{-2}*7^3
\]Did you follow up to this point?

Answer 8

no u distribute but it doesn show anythin in amswer

Answer 9

I am asking you if you followed up to that point. If you did not follow up to that point tell me where you are having doubts.

Answer 10

O just realised that u dont do anything with the sevens just the expoents i think i got it now thhnx

Answer 11

\[ \large
7^{-1} * 7^3 = 7^{-1+3} = 7^{2} = 49\\
7^{-2} * 7^3 = 7^{-2+3} = 7^{1} = 7 \\
49 + 7 = 56
\]