Question

resolva as expressões numérica 19+3(7-21+7:7)-1

Answer 1

Resposta:

19+3(7-21+7:7)-1

=19+3(−14+7/7)−1

=19+3(−14+1)−1

=19+(3)(−13)−1

=19+−39−1

=−20−1

=−21

Explicação passo a passo: