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3 years ago

9

There are 53 students on the school basketball team. the number of 8th graders is 15 fewer than 3 times the number of 7th grader

s. how many 7th graders are there?

1 answer:

White raven [17]3 years ago

5 0

Answer:

17 7th graders

Step-by-step explanation:

grd 8 is x, grd 7 is y

x+y=53

x=3y-15

use substitution: (3y-15)+y=53

4y-15=53

4y=68

y=17

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