SOLUTION: the perimeter of a triangle is 30 inches. The first side of the triangle is 1 inch longer than the second side. The second side is 7 inches longer than the third side. Where is the

Click here to see ALL problems on Triangles

Question 387274: the perimeter of a triangle is 30 inches. The first side of the triangle is 1 inch longer than the second side. The second side is 7 inches longer than the third side. Where is the length of each side of the triangle?
Let x the third side.Then x+7 is the second,and x+7+1 is the first...
So we have:
x+x+7+x+8=30
Then 3x+15=30
3x=30-15
3x=15
x=15/3
x=5
Found 2 solutions by edjones, dnanos:
Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website!
Let the 3rd side=x. the 2nd side=x+7 and the 1st side=x+8
x+x+7+x+8=30
3x+15=30
3x=15
x=5
x+7=12
x+8=13
.
Ed

Answer by dnanos(83) (Show Source):
You can put this solution on YOUR website!