Question

a) (-1) + (+2) + (+4) + (+8) + (+7) + (-2) + (-14) ?????

b) (+4) + (-6) + (-5) + (+7) + (-3) + (+10) + (+1) + (-12) ????

c) (+95) + (-90) + (+85) + (-80) + (-100) + (-85) + (-95) ???

d) (-1.000) + (-900) + (-800) + (+700) + (+650) + (+850) + (+750 ????


ajuda ai

Answer 1

Resposta:

A-

4

b-

-4

C-

-270

D-

1249

Explicação passo-a-passo:

A

$\left(-1\right)+\left(2\right)+\left(4\right)+\left(8\right)+\left(7\right)+\left(-2\right)+\left(-14\right)\\1+\left(4\right)+\left(8\right)+\left(7\right)+\left(-2\right)+\left(-14\right)\\1+\left(4\right)+\left(8\right)+\left(7\right)+\left(-2\right)+\left(-14\right)\\5+\left(8\right)+\left(7\right)+\left(-2\right)+\left(-14\right)\\13+\left(7\right)+\left(-2\right)+\left(-14\right)\\20+\left(-2\right)+\left(-14\right)\\20-2+\left(-14\right)\\18+\left(-14\right)\\18-14\\4$

B

$\left(4\right)-6+\left(-5\right)+\left(7\right)+\left(-3\right)+\left(10\right)+\left(1\right)+\left(-12\right)\\-2+\left(-5\right)+\left(7\right)+\left(-3\right)+\left(10\right)+\left(1\right)+\left(-12\right)\\-7+\left(7\right)+\left(-3\right)+\left(10\right)+\left(1\right)+\left(-12\right)0+\left(-3\right)+\left(10\right)+\left(1\right)+\left(-12\right)\\-3+\left(10\right)+\left(1\right)+\left(-12\right)\\7+\left(1\right)+\left(-12\right)\\8+\left(-12\right)\\8-12\\-4$

C

$\left(95\right)-90+\left(85\right)+\left(-80\right)+\left(-100\right)+\left(-85\right)+\left(-95\right)\\5+\left(85\right)+\left(-80\right)+\left(-100\right)+\left(-85\right)+\left(-95\right)\\90+\left(-80\right)+\left(-100\right)+\left(-85\right)+\left(-95\right)\\90-80+\left(-100\right)+\left(-85\right)+\left(-95\right)\\10+\left(-100\right)+\left(-85\right)+\left(-95\right)\\10-100+\left(-85\right)+\left(-95\right)\\10-100+\left(-85\right)+\left(-95\right)\\-90-85+\left(-95\right)\\-175-95$ = -270

D-

$\left(-1\right)-900+\left(-800\right)+\left(700\right)+\left(650\right)+\left(850\right)+\left(750\right)\\-901+\left(-800\right)+\left(700\right)+\left(650\right)+\left(850\right)+\left(750\right)\\-901-800+\left(700\right)+\left(650\right)+\left(850\right)+\left(750\right)\\-901-800+\left(700\right)+\left(650\right)+\left(850\right)+\left(750\right)\\-1001+\left(650\right)+\left(850\right)+\left(750\right)\\-351+\left(850\right)+\left(750\right)\\1249$