Question

calcule;
a ) - 7 + 5 - 20 =
b ) - 3x - 2-29 =
c ) 1 - 2 =
--- --
5 9
d) 1 + 2 - 3 =
--- --- ---
3 5 4

Answer 1

a) -22
b) -3x=31 (-1)
x=31/3
c) -1
d) 0

Answer 2

Olá!
Conteúdo Envolvido: # Aritmética

a) - 7 + 5 - 20 = -27+5 = -22 <--

b) -3(-2) - 29 = 6 - 29  = -23 <--

c) 1/5 - 2/9 = 9 + 10 / 45 = 19 / 45 <--

d) 1/3 + 2/5 - 3/4 = 20 + 24 - 45 / 60 = -1 / 60 <--

Espero ter ajudado! :)