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Hunter-Best [27]
3 years ago
11

The total number of math students and history students is 43. Find the number of students in each class if the number of history

students is 7 less than the number of math students.
Mathematics
1 answer:
olasank [31]3 years ago
8 0

Answer:

25 math 18 history

Step-by-step explanation:

Equations:

x+y=43

x-7=y

x+x-7=43

2x=50

X=25

25-7=y

y= 18

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OverLord2011 [107]
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---------- =      -------
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make the bottom have same common denominator

10/11 x (10/10) = 100/121

Get rid of the denominator (for both now have 121 as a base)

5x + 10 = 100

5x + 10 (-10) = 100 (-10)

5x = 90

5x/5 = 90/5

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x = 18  is your answer

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