Question

3) Efetue:
a) (+1/2x) + (-1/3x) =
b) (-2/5x) + (-2/3x) =
c) (-7/2y) + (+1/4y)
d) (+2m) +(-3/4m) =
e) (+2/3x) - (-3/2x) =
f) (-3/4y) - (+1/2y) =
g) (+2/5m) - (+2/3m) =
h) (-3x)-(-2/5x) =
​

Answer 1

Resposta:

a) 1/6x

b) -16/15x

c) -13/4y

d) 5/4m

e) 13/6x

f) -5/4y

g) -4/15m

h) -13/5x

Explicação passo-a-passo:

a) (+1/2x) + (-1/3x) = 1/2x -1/3x = (3-2)/6 x = 1/6 x

b) (-2/5x) + (-2/3x) = -2/5x -2/3x = (-6 -10)/15x= -16/15x

c) (-7/2y) + (+1/4y)= -7/2y +1/4y = (-14 +1)/4y = -13/4y

d) (+2m) +(-3/4m) = 2m -3/4m = (8 - 3)/4m = 5/4m

e) (+2/3x) - (-3/2x) = 2/3x +3/2x = (4 +9)/6x = 13/6x

f) (-3/4y) - (+1/2y) = -3/4y -1/2y = (-3 -2)/4y = -5/4y

g) (+2/5m) - (+2/3m) = 2/5m -2/3m = (6 -10)/15m = -4/15m

h) (-3x)-(-2/5x) = -3x +2/5x = (-15 +2)/5x = -13/5x