Question

Calcule.
a) 64-{20+[-60+(-10-5)]+5}=

b) 15+{5-[-30+(-8-10+3)]-16}=

Answer 1

a) 114

b) 49

a) 64-{20+[-60+(-10-5)]+5}=

64-{20+[-60-15]+5}

64-{20-75+5}

64-{-50}

64+50

114

b) 15+{5-[-30+(-8-10+3)]-16}=

15+{5-[-30-15]-16}

15+{5+45-16}

15+34

49

Feito com carinho

08/03/22

Answer 2

resposta:

a)

$\sf{64-{20+[-60+(-10-5)]+5}}$

$\sf{64 - (20 + ( - 60 + ( - 15)) + 5)}$

$\sf{64 - (20 + ( - 60 - 15) + 5)}$

$\sf{64 - (20 + ( - 75) + 5)}$

$\sf{64 - (20 - 75 + 5)}$

$\sf{64 - ( - 50)}$

$\sf{64 + 50}$

$\rightarrow\boxed{\boxed{\sf{114}}}\checkmark$

b)

$\sf{15+{5-[-30+(-8-10+3)]-16}}$

$\sf{15 + (5 - ( - 30 + ( - 15)) - 16)}$

$\sf{15 + (5 - ( - 30 - 15) - 16)}$

$\sf{15 + (5 - ( - 45) - 16)}$

$\sf{15 + (5 + 45 - 16)}$

$\sf{15 + 34}$

$\rightarrow\boxed{\boxed{\sf{49}}}\checkmark$

Explicação passo-a-passo:

(espero ter colaborado)