Explanation
[tex]\frac{6}{7}(x+3)=4[/tex]
Step 1
Multiply both sides by 7
[tex]\begin{gathered} \frac{6}{7}(x+3)=4 \\ \frac{6}{7}(x+3)\cdot7=4\cdot7 \\ 6(x+3)=28 \end{gathered}[/tex]Step 2
apply distributive property to break the parenthesis
[tex]\begin{gathered} 6(x+3)=28 \\ 6x+18=23 \end{gathered}[/tex]Step 3
subtract 18 in both sides
[tex]\begin{gathered} 6x+18=23 \\ 6x+18-18=23-18 \\ 6x=5 \end{gathered}[/tex]Step 4
Finally, divide both sides by 6
[tex]\begin{gathered} 6x=5 \\ \frac{6x}{6}=\frac{5}{6} \\ x=\frac{5}{6} \end{gathered}[/tex]I hope this helps you