Question

Questão 08: Calcule:
a)-(+7) -4 -12 =
b) 15 -(+9) -(-2) =
c) 72-4 =
d) 23 + 10 =​

Answer 1

$a)-(+7) -4 -12 = -23\\ </p><p>b) 15 -(+9) -(-2) =8 \\ </p><p>c) 72-4 = 68\\ </p><p>d) 23 + 10 = 33$