Mark M. answered • 8d

Mathematics Teacher - NCLB Highly Qualified

5x + 6x + 7x = 54

18x = 54

x = 3

The sides are 15 cm, 18 cm, and 21 cm.

Gavin P.

asked • 8dSolve by writing an inequality

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Mark M. answered • 8d

Mathematics Teacher - NCLB Highly Qualified

5x + 6x + 7x = 54

18x = 54

x = 3

The sides are 15 cm, 18 cm, and 21 cm.

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