# How do you simplify -3i(2-5i) - (7+i)?

$- \left(22 + 7 i\right)$
$- 3 i \left(2 - 5 i\right) - \left(7 + i\right) = - 6 i + 15 {i}^{2} - 7 - i$
$= - 7 i + 15 \left(- 1\right) - 7$
$= - 7 i - 15 - 7$
$= - 7 i - 22$
$\mathmr{and} , - \left(22 + 7 i\right)$