Given:
A line DF and its measure 5x + 7. Measure of DE = 7cm and measure of EQ = 4x + 3.
Required:
Find the length of DF?
Explanation;
From figure we can draw conclusion that
[tex]\begin{gathered} DE+EF=DF \\ 7+4x+3=5x+7 \\ x=3 \end{gathered}[/tex]
So, length of DF
[tex]\begin{gathered} =5x+7 \\ =5(3)+7 \\ =15+7 \\ =22 \end{gathered}[/tex]
Answer:
Length of DF = 22cm.
