Question

resolva as equaçoes
a)6x=2x+16

b)2x + 3=x4

c)5x + 7=4x+10

d)4x - 10=2x+2

e)4x - 7=8x-2

f)9x + 9+3x=1

g)5(1 - x)-2x+1=-3(2 + x)

h)4(x - 3)=2x-5

Answer 1

a)6x=2x+16

6x-2x=16
4x=16
x=16/4
x=4

b)2x + 3=x4(?)

c)5x + 7=4x+10

5x-4x=10-7
x=3

d)4x - 10=2x+2

4x-2x=2+10
2x=12
x=12/2
x=6

e)4x - 7=8x-2

4x-8x=-2+7
-4x=5  .(-1)
4x= -5
x= -5/4

f)9x + 9+3x=1

9x+3x=1-9
12x= -8
x= -8/12 (÷4)
x= -2/3

g)5(1 - x)-2x+1=-3(2 + x)

5-5x-2x+1= -6-3x
-5x-2x+3x= -6-5-1
-4x=-12  (.-1)
4x=12
x=12/4
x=3

h)4(x - 3)=2x-5

4x-12=2x-5
4x-2x= -5+12
2x=7
x=7/2