Question

valendo 50 pontos pra cada me ajuda please como fazer equações
a) x/4 - 3/1 = 4/1 - x/3
b) x/1 + 7/6 = 11/2 - 5x/3
c) 4 . (x/2 - 2x/9) = - 1
d) 1/6 . (4x -12) = 6x/5
e) 2 . (3x/8 -2/1) = 3 . (1 - 7x/4) - x

Answer 1

Explicação passo-a-passo:

a)x/4-3/1=4/1-x/3 = m.m.c=12

3x-36=48-4x

3x+4x=48+36

7x=84

x=84/7

x=12

b)x/1+7/6=11/2-5x/3 = m.m.c=6

6x+7=33-10x

6x+10x=33-7

16x=26

x=26/16 :(2/2)

x=13/8

c)4•(x/2-2x/9)= -1

4x/2-8x/9= -1 m.m.c= 18

36x-16x=-18

20x=-18

x= -18/20 :(2/2)

x= -9/10

d)1/6•(4x-12)=6x/5

4x/6-12/6=6x/5

4x/6-2=6x/5 m.m.c=30

20x-60=36x

20x-36x=60

-16x= 60 ×(-1)

16x= -60

x= -60/16 :(4/4)

x= -15/4

e)2•(3x/8-2/1)=3•(1-7x/4)-x

6x/8-4= 3-21x/4-x m.m.c =8

6x-32=24-42x-8x

6x+42x+8x=24+32

56x=56

=56/56

x=1