Question

Elimine os parênteses e determine as somas algébricas
a- (1,3) + (2,7) =
b-(0,56) + (1,75) - (8,6) =
c-(-0,23) + (+2,08) - (-1,37) + (-7,29) =
D-(+10) -V(-2,17) - (+3,67) - 6,25 + (+4,7)=

Answer 1

Resposta:

a- 1,3 + 2,7 = 4

b-

$0,56+1,75-8,6=\\2,31-8,6=-6,29$

c-

$(-0,23) + (+2,08) - (-1,37) + (-7,29) =\\-0,23+2,08-(-1,37)+(-7,29)=\\-0,23+2,08+1,37-7,29= - 4,07$

d-

$(+10) -(-2,17) - (+3,67) - 6,25 + (+4,7)=\\10+2,17-3,67-6,25+4,7= 6,95$