How do you simplify #\frac { 7a } { 7a ^ { 4} }#?

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Answer 1 · 2017-01-03T02:25:15

#1/a ^ { 3}#

Okay so #\frac { 7a } { 7a ^ { 4} }# means

#(7 * a)/(7 * a * a * a * a)#

When you're in doubt always expand!

When expanding you see the bigger picture, now remember after this we cancel stuff out to make it easier to understand

For example take #\frac { 24 } { 4 }#. On a test would you multiply #\frac { 24 } { 4 }# or #6#. Which one is easier? Same goes with this!

Cancel the redundant letters and numbers in this case the number #7# and an #a#.

Now the top part is gone and there is #a ^ { 3}# left. Which is on the bottom but since the top part make sure to put 1 at the top!