Question 231985
The perimeter of a triangle is all 3 sides added up.  The formula is P=A+B+C

Since 2 sides are the same, we will let them be X.

Since the third side is 9 more centimeters than the other ones, we will assign the third side to be X+9.

The Perimeter is 93cm.

So filling in the equation P=A+B+C we get:

93=X+X+(X+9)

Combining like terms we get:

93=3X+9

Subtract 9 from both sides:

84=3X

Divide both sides by 3 to get X alone on one side:

28=X

So now we know that X=28.  So plugging that answer back into our assigned variables we know that the two equal sides of the triangle are 28cm's each.  Adding 9cm to X to get the third side gives us 37cm.

ANSWER:  Two sides of the triangle are 28cm's each, the third is 37cm.