Question

3) efetue:
(só a 3)








ajuda ae galera é pra amanhã valendo 49 pontos
obrigada

Answer 1

a) 1/2x-1/3x=3/6x-2/6x=1/6x
b) -2/5x-2/3x=-6/15x-10/15x=-16/15x
c)-7/2y+1/4y=-14/4y+1/4y=-13/4y
d)2m-3/4m=???
e)2/3x+3/2x=4/6x+9/6x=13/6x
f)-3/4y-1/2y=-3/4y-2/4y=-5/4y
g)2/5m-2/3m=4/15m-10/15m=-6/15m
h)-3x+2/5x=???

Answer 2

Boa noite!

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

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

c)
(-7/2y)+(1/4y)=
-28y/8 + 2y/8 = -26y/8

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

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

f)
(-3/4y)-(1/2y)=
-6y/8-4y/8 = -10/8y

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

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

Espero ter ajudado  ;)