Die korrekte Antwort lautet:
-3 ⋅ ( - 2 ) = 6

$(48-\left(27+58\right))·10$

= $\left(48-27-58\right)·10$

= $-37·10$

= $-370$

$-5-{\left(-3\right)}^2+3\cdot {\left(-1\right)}^3$

= $-5-9+3\cdot \left(-1\right)$

= $-5-9-3$

= $-17$