Question

Решите на множестве Z уравнения: 3х+17=-13 4х-5= -21

Answer 1

$3x + 17 = - 13 \ 3x = - 13 - 17 \ 3x = - 30 \ x = - 30 div 3 \ x = - 10 \ \ \ 4x - 5 = - 21 \ 4x = - 21 + 5 \ 4x = - 16 \ x = - 16 div 4 \ x = - 4$