Question

Efetue as adições algébricas:

a)(+3)-(+5)-(-10)=


b)(+2)+(-6)-(+5)+(+2)=


c)(-5)-(-8)+(-7)-(-9)+(-3)=



d)(-2)-(-4)-(+7)-(-2)+(-12)=​

Answer 1

$A)\:(+3)-(+5)-(-10)$

$+3-5+10$

$-2+10$

$8$

$A)\:(+2)+(-6)-(+5)+(+2)$

$+2-6-5+2$

$-4-5+2$

$-9+2$

$-7$

$C)\:(-5)-(-8)+(-7)-(-9)+(-3)$

$-5+8-7+9-3$

$3-7+9-3$

$-4+9-3$

$5-3$

$2$

$d)\:(-2)-(-4)-(+7)-(-2)+(-12)$

$-2+4-7+2-12$

$2-5-12$

$-15$