Question

One side of a triangle is 4 cm longer than the shortest side and 2 cm shorter than the longest side. The perimeter is 38 cm. Find the dimensions of the triangle.

Answer 1

x+x-2+x+4=38
3x+2=38
3x=36
x=12
12, 10, 16

Answer 2

PT=sum of all sides
38=x+(x-2)+(x+4)
38=x+x-2+x+4
38=x+x+x-2+4
38=3x+2
38-2=3x
36=3x
36/3=3x/3
12=x
one side is 12
12-2=10
the other side is 10
12+4=16
the last side is 16