Question

2)resolva as equações a)10 -2 x =3 x b)x - 3=6+4 x c)(7 x -8). 2=6.(3 x -4) d)16 - 6 - 7 x =15+2 x

Answer 1

A)10 -2x =3x
- 2x - 3x = - 10
-5x = - 10
x = 2

b)x - 3=6 + 4x
x - 4x = 6 + 3
- 3x = 9
x = 9/-3
x = - 3

c)(7x - 8). 2=6.(3x -4)
14x - 16 = 18x - 24
14x - 18x = - 24 + 16
- 4x = - 8
x = -8/-4
x = 2

d)16 - 6 - 7x =15 + 2x
- 7x - 2x = 15 - 16 + 6
- 9x = - 1 + 6
- 9x = 5
x = -9/5

Answer 2

Olha as equações vão ficar assim se

A)10 -2x =3x

- 2x - 3x = - 10

-5x = - 10

x = 2

b)x - 3=6 + 4x

x - 4x = 6 + 3

- 3x = 9

x = 9/-3

x = - 3

c)(7x - 8). 2=6.(3x -4)

14x - 16 = 18x - 24

14x - 18x = - 24 + 16

- 4x = - 8

x = -8/-4

x = 2

d)16 - 6 - 7x =15 + 2x

- 7x - 2x = 15 - 16 + 6

- 9x = - 1 + 6

- 9x = 5

x = -9/5