The answer is subtract 5 from both sides :) by doing this, the equation becomes x= 7-5, isolating the variable (x) hope this helps!! <3
Convert 3 (1/2) into a mixed fraction first and then multiply it by 3:
3(1/2) * 3
(7/2) * 3
21/2
10 (1/2) = answer
Derrick rode 21 total km.
You can find this by adding the 3 distances together and multiplying by 3. Also remember to watch the units as 500m = .5km.
