Question

me ajudem por favor

resolva as expressões abaixo:
a) 12/4+3.7-10

b) 20-15/3+4.7

c) 5.8-20/5+7

d) 13+30/5-4.4

e) (16-12/4) + (3+5.5) -2

f) (20-5) /3+ (1+6.4)​

Answer 1

Resposta:

A) 12/4 + 3.7 - 10

Dividir: 12/4 = 3

=3 + 3.7 - 10

Somar/Subtrair: 3 + 3.7 - 10

=  -3.3

B) 20 - 15/3 + 4.7

Dividir: 15/3 = 5

= 20 - 5 + 4.7

Somar/Subtrair: 20 - 5 + 4.7

= 19.7

C) 5.8 - 20/5 + 7

Dividir: 20/5 = 4

= 5.8 - 4 + 7

Somar/Subtrair: 5.8 - 4 +7

= 8.8

D) 13 + 30/5 - 4.4

Dividir: 30/5 = 6

= 13 + 6 - 4.4

Somar/Subtrair: 13 + 6 - 4.4

= 14.6

E) (16 - 12/4) + (3 + 5.5) - 2

Remover os parênteses: (a) = a

= 16 - 12/4 + 3 + 5.5 - 2

Dividir: 12/4 = 3

= 16 - 3 + 3 + 5.5 - 2

Somar/Subtrair: 16 - 3 + 3 + 5.5 - 2

= 19.5

F) (20 - 5)/3 + ( 1 + 6.4)

Remover os parênteses: (a) = a

= 20 - 5/3 + 1 + 6.4

= 20 - 5/3 = 5

=5 + 1 + 6.4

Somar: 5 + 1 + 6.4

= 12.4

• Ps. Espero ter te ajudado!