Question

28)resolva as equaçoes
a)4x-6=22
b)9-x=2x
c)8+4x=6x-4
d)3x+1=x+9
e)4x-11=7-2x
f)3x+1=5+x

Answer 1

A )

4x - 6 = 22

4x = 22 + 6

X = 28/4

X = 7



B )

9 - x = 2x

- x - 2x = - 9

- 3x = - 9 *(-1)

X = 9/3

X = 3



C )

8 + 4x = 6x - 4

4x - 6x = - 4 - 8

- 2x = - 12 * (-1)

X = 12/2

X = 6




D )

3x + 1 = x + 9

3x - x = 9 - 1

2x = 8

X = 8/2

X = 4



E )


4x - 11 = 7 - 2x

4x + 2x = 7 + 11

6x = 18

X = 18/6

X = 3




F )


3x + 1 = 5 + x

3x - x = 5 - 1

2x = 4

X = 4/2

X = 2