5) Решить уравнение: a) x+(-10)=12, б) -19-x=-24, в) x-8=-9

а) \( x + (-10) = 12 \implies x = 12 + 10 \implies x = 22 \), б) \( -19 - x = -24 \implies -x = -24 + 19 \implies -x = -5 \implies x = 5 \), в) \( x - 8 = -9 \implies x = -9 + 8 \implies x = -1 \)