You can write an equation. KL+LM=KM Enter the info x+.5+3x-2=3x+1.5 Combine like terms 4x-1.5=3x+1.5 Add 1.5 to both sides 4x-1.5+1.5=3x+1.5+1.5 4x=3x+3 Subtract 3x from both sides 4x-3x=3x+3-3x x=3
Then, enter 3 into the expression to find LM 3x-2 3(3)-2 9-2 7 LM is worth 7. I hope this helped!