The teacher separated her class of forty-six students into two groups. One group has 7 more than twice as many students as the other group. Use variable s for the group with less students.

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11-10-2016
Mathematics

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The teacher separated her class of forty-six students into two groups. One group has 7 more than twice as many students as the other group. Use variable s for the group with less students.

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SnowBrain SnowBrain · Answer 1 · 2016-10-21T14:52:20+02:00

SnowBrain SnowBrain

21-10-2016

x=bigger group
s=smaller group

46=s+x
x=2s+7 1.)Substitute

46=s+2s+7 2.)Single out the variable

39=3s 3.) Divide to remove 3 from s

1/3 (39)=1/3 (3s)

13=s

46-13=39

x=39
s=13

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