Question

Resolva as equações a seguir.

Answer 1

Resposta:

Explicação passo-a-passo:

a) 2x/3 - 1/6 = x/ 15    mmc 30

20x-5=2x

20x-2x= 5

18x=5

x=5/18

b) 3-b/2 +b= b/4 -2   mmc 4

6-2b+4b=b-8

2b-b=-6-8

b= -14

c)4(x-3)/5 - 2(x+3)/10 = x/25  mmc 50

40(x-3)-10(x+3)= 2x

40x-120-10x-30=2x

30x-2x= 150

28x=150

x=150/28 : 2 = 75/14

d) y/4+y/6-y/8= 2-y/2  mmc 24

6y+4y-3y=24-12y

7y+12y=24

19y=24

y=24/19