Explanation
we have a equation with 1 unknow value( d), so to find this we need to isolate d
[tex]35=3d+6d[/tex]Step 1
add like terms
[tex]\begin{gathered} 35=3d+6d \\ 35=9d \end{gathered}[/tex]Step 2
Division property of equality states that when we divide both sides of an equation by the same non-zero number, the two sides remain equal,
hence , divide both sides by 9
[tex]\begin{gathered} 35=9d \\ \frac{35}{9}=\frac{9d}{9} \\ \frac{35}{9}=d \end{gathered}[/tex]therefore, the value for d is
[tex]d=\frac{35}{9}[/tex]I hope this helps you
