Question

resolva as equaçoes:

a)x+x+8=54

b)7x-2-5x=18

c)12x-10x-4=3

d)-x-2x-4=11

e)8x=5x+4,5


a) 5(3-x)-4x = 18

b) 9x-3(2x+2) = 15

c) 2,5(x-2)-1,5x = 1

d) 3,5x+8= 2(x+7)

e) 6(3x+2)-8= -2

f) -3(x-5)-2(2x+1)= -8

Answer 1

Resposta:

a)x+x+8=54

2x+8=54

2x=54

x=54/2

x= 27

b) 7x-2-5x=18

2x-2=18

2x=18-2

x=16/2

x=8

c)12x-10x-4=3

2x-4=3

2x=3+4

x=7/2

x= 3,5

d) -x-2x-4=11

-3x=11+4

x=15/-3

x=-5

e)8x=5x+4,5

8x-5x=4,5

3x=4,5

x=4,5/3

x=1,5