Question

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Calcule as seguintes somas algébricas: a) 6+(-9+1) b) 8-(6+10) c) -10+(6-4) d) 2+(2+5-7) e) -5+(2-4)-(7-1) (PFVR, ME AJUDEM!!!!)

Answer 1

Resposta:

a)–2

b)–8

c)–8

d)2

e)–13

Explicação passo-a-passo:

a)6+(–9+1)

=6-9+1

=–3+1

=–2

b)8–(6+10)

=8–6–10

=2–10

=–8

c)–10+(6–4)

=–10+6–4

=–4–4

=–8

d)2+(2+5-7)

=2+2+5–7

=4+5–7

=9–7

=2

e)–5+(2–4)–(7–1)

=–5+2–4–7+1

=–3–4–7+1

=–7–7+1

=–14+1

=–13