SOLUTION: given congruent triangles ABC=DEF where AB=2, BC=5, and DE=3x-7. what is the value of X.

Algebra ->  Geometry-proofs -> SOLUTION: given congruent triangles ABC=DEF where AB=2, BC=5, and DE=3x-7. what is the value of X.      Log On


   

Question 1128152: given congruent triangles ABC=DEF where AB=2, BC=5, and DE=3x-7. what is the value of X.
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

given congruent triangles ABC=DEF where
+AB=2,
BC=5, and
DE=3x-7
what is the value of x
if triangles congruent +AB=DE
then 2=3x-7
2%2B7=3x
9=3x
x=9%2F3
x=3

Answer by ikleyn(52794) About Me  (Show Source):
You can put this solution on YOUR website!
.
Notice that "BC = 5" is UNNECESSARY and an EXCESSIVE data in this problem.


It is not used in the solution.