solve for u. \$\\frac{u}{5} = 9\$ \$u = \\square\$

$solve for u. \$\\frac{u}{5} = 9\$ \$u = \\square\$$

solve for u.
\$\frac{u}{5} = 9\$
\$u = \square\$

To isolate $ u $, we multiply both sides of the equation $\frac{u}{5} = 9$ by 5. This gives $ 5\times\frac{u}{5}=9\times5 $.

Simplifying the left side, $ 5\times\frac{u}{5} $ cancels out to $ u $. On the right side, $ 9\times5 = 45 $. So $ u = 45 $.

45