Question

1- Calcule:
a)-8+6-1=
b)12-7+3=
c)22-3-14-5+24+12=
d)13+7-2-8+15-1=​

Answer 1

                   Adição e Subtração

Problema "a" :

$-8+6-1\\\\=-2-1\\\\=\boxed{\bf{-3}}$

Problema "b" :

$12-7+3\\\\=5+3\\\\=\boxed{\bf{8}}$

Problema "c" :

$22-3-14-5+24+12\\\\=19-14-5+24+12\\\\=5-5+24+12\\\\=0+24+12\\\\=\boxed{\bf{36}}$

Problema "d" :

$13+7-2-8+15-1\\\\=20-2-8+15-1\\\\=18-8+15-1\\\\=10+15-1\\\\=25-1\\\\=\boxed{\bf{24}}$

Espero ter ajuddo, boa sorte!!