Question

Expressão Numérica
Quanto é...

1) 5.20-[240÷80+(39÷3-8)×2+2×15=


2) 45+[(8×5-10÷2)+(18÷6-2)]=

3) 10+3×(5+8-4)-16÷8-(7-5+12)÷7=

A Primeira é tudo junto!!
Por favor respondam o mais rápido possível...
Obrigada!!!

Answer 1

Olá,

Vamos lá,

1) 5.20-[240÷80+(39÷3-8)×2+2×15
=100-[3+(13-8)×2+30
=100-[3+(5)×2+30
=100-[3+10+30
=100-43
=-57

2) 45+[(8×5-10÷2)+(18÷6-2)]
=45+[(40-5)+(3-2)]
=45+[35+1]
=45+36
=81

3) 10+3×(5+8-4)-16÷8-(7-5+12)÷7
=10+3×(13-4)-2-(2+12)÷7
=10+3×9-2-14÷7
=10+27-2-2
=37-2-2
=35-2
=33

Answer 2

1)
= 5.20 - [240 ÷ 80 + (39 ÷ 3 - 8) × 2 + 2 × 15
= 100 - [ 3 + (13 - 8) . 2 + 30]
= 100 - [ 3 + 5.2 + 30]
= 100 - [ 3 + 10 + 30]
= 100 - [ 3 + 40]
= 100 - 43
= 57

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2)
= 45 + [(8 × 5 - 10 ÷ 2) + (18 ÷ 6 - 2)]
= 45 + [(40 - 5) + (3 - 2)]
= 45 + [ 35 + 1]
= 45 + 36
= 81

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3)
= 10 + 3 × (5 + 8 - 4)-16÷8-(7-5+12)÷7
= 10 + 3 . ( 13 - 4) - 2 - ( 2 + 12) : 7
= 10 + 3. (9) - 2 - (14):7
= 10 + 27 - 2 - 2
= 37 - 4
= 33

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