Question

resolva: a)2-4x=32-18x+12 b)2x-1=-3+x+4 c)3x-2-2x-3=0 d)10-9x+2x=2-3x e)4x-4-5x=-6+90 f)2-3x=-2x+12-3x g)360+3x=30x h)3x=x+1+7

Answer 1

a) 2-4 x =32-18x+12  

-4x+18x =32+12-2

14x = 42

X = 42/14

X = 3

b) 2x-1 = -3+x+4  

2x-x = -3+4+1

X = 2

c) 3x-2-2x-3 = 0  

3x-2x = 3+2

X = 5

d) 10-9x+2x = 2-3x  

10-2 = -3x+9x-2x

-3x+9x-2x = 10-2

4x = 8

X = 8/4

X = 2

e) 4x-4-5x = -6+90  

4x-5x = 90-6-4

-x = 80 .(-1)

X = -80

f) 2-3x = -2x+12-3x  

-3x+2x+3x = 12-2

2x = 10

X = 10/2

X = 5

g) 360+3x = 30x  

30x-3x = 360

27x = 360

X = 360/27

X = 360:9/27:9

X = 40/3

h) 3x = x+1+7

3x-x = 1+7

2x = 8

X = 8/2

X = 4