Ninety people are separated into two groups. the first group is five less than three times as large as the second group. find out how many people are in each group.

3g-5+1g=90                                     23x3=69-5=64
4g+-5=90                                         64+23=87
Add 5 to both sides                         one group has 64
4g=95                                              the other has 23
divide both sides by 4
g=23

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