SOLUTION: the perimeter of a triangle is 30 cm. the length of one side is 7 cm shorter than the second side and the third side is 1 cm longer than the second side. find the length of each si

Question 916642: the perimeter of a triangle is 30 cm. the length of one side is 7 cm shorter than the second side and the third side is 1 cm longer than the second side. find the length of each side using the system of linear equations in three variables
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
x the length of the second side
(x-7) + x + (x+1) = 30cm
3x = 36
x = 12cm, the length of the second side
sides are: 5cm, 12cm, 13cm
...
And...checking
sum = 30cm
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