mario was on a 21-mile hiking trail. he walked 3/7 of the trail before stopping for lunch. how far did he walked before lunch? explain your answer.

Your school subject is math, NOT talcott.

3/7 * 21 = ?

it's 9 miles

21/1*3/7=(21*3=63) & (1*7=7)= 9 miles

9 milled

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To find out how far Mario walked before stopping for lunch, we can follow these steps:

Step 1: Calculate the distance Mario walked by multiplying the total distance of the trail by the fraction he walked before lunch.

Total distance of the trail = 21 miles
Fraction Mario walked before lunch = 3/7

Distance Mario walked before lunch = (Total distance of the trail) * (Fraction Mario walked before lunch)
= 21 miles * (3/7)
= (21 * 3) / 7
= 63 / 7
= 9 miles

Therefore, Mario walked 9 miles before stopping for lunch.