The coastline of the united states is 12,383 miles long canada coastline is 113,211 miles longer than the coastline of the united states how long is the coastline of canada

X-12,383=113,211

X-12,383+12,383=113,211+12,383

X=113,211+12,383

X=125,594

I hope this helped

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents