Answer:
3
Explanation:
If CD = 4, DE = 3x, and CE = x + 6, what is DE?
4 + 3x = x + 6 Set the equations equal to each other
-x -x Subtract x from both sides
4 + 2x = 6 Equation after x was subtracted
-4 -4 Subtract 4 from both sides
2x = 2 Equation after 4 was subtracted
/2 /2 Divide by 2 on both sided
x = 1 End value
Since DE is 3x and x = 1, then 3(1) = 3. DE = 3.