(−10)+(−8);
(−5)−(+5);
(−4)−(−8);
(−7)−(+12);
(+10)−(−5);
(+15)−(+10);
(−8)−(−18);
(+20)−(−5);
(−4)−(−4);
(−12)+(−7);
(−8)−(+7);
(−5)−(+8);
(−20)+(−15);
(−8)+(+20);
(+7)+(+2)−(−3);
(−10)+(+5)−(+10);
(+200)+(−150)+(+800)+(−1000).
Soluções para a tarefa
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Resposta:Segue as contas baixo na explicação
Explicação passo-a-passo:
(−10)+(−8)-->-10-8-->-18
(−5)−(+5)-->-5-5-->-10
(−4)−(−8)-->-4+8-->+8
(−7)−(+12)-->-7-12-->-19
(+10)−(−5)-->+10+5-->+15
(+15)−(+10)-->+15-10-->+5
(−8)−(−18)-->-8+18-->+10
(+20)−(−5)-->+20+5-->+25
(−4)−(−4)-->-4+4-->0
(−12)+(−7)-->-12-7-->-19
(−8)−(+7)-->-8-7-->-15
(−20)+(−15)-->-20-15-->-35
(−8)+(+20)-->-8+20-->+12
(+7)+(+2)−(−3)-->+7+2+3-->+12
(−10)+(+5)−(+10)-->-10+5-10-->-20+5-->-15
(+200)+(−150)+(+800)+(−1000)-->+200-150+800-1000-->+1000-150-1000-->-150
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