Question

calcule o valor (a) (+4/5) - (+3/5)=
b) (-3/5) +(-1/4)=
c)(-1 1/4) -2 (-2 1/4)
d) (-2 3/10) + (+2 3/10)
e) (-0,7) - (-0,2)
f) (+0,44) - (0,77)​

Answer 1

Resposta:

A) 1/5

b) -17/20

c) 3/4

d) 0

e) -0,11

f) -0,33

Explicação passo-a-passo:

a) 4/5 -3/5 = 1/5

b) -3/5 -1/4

mmc= 20

-12/20 -5/20 = -17/20

c) (-11/4) -2 ( -2/1 +1/4)

(-11/4) -2 (-8/4 +1/4)

(-11/4) -2 (-7/4)

(-11/4) +14/4

3/4

d) (-2/1 +3/10) + (2/1 + 3/10)

(-20/10 + 3/10) + (20/10 + 3/10)

-17/10 + 17/10

0

e) -0,7 -0,2 = -0,11

f) 0,44 -0,77 = -0,33