Question

what is 11 = –d + 15

Answer 1

Given equation:

$\frac{3}{7}x+5=8$

To solve x.

$\begin{gathered} \frac{3}{7}x+5-5=8-5 \\ \frac{3}{7}x=3 \\ 7\cdot\frac{3}{7}x=3\cdot\: 7 \\ 3x=21 \\ \frac{3x}{3}=\frac{21}{3} \\ x=7 \end{gathered}$

The answer is 7.