Question

Resolva as equações:

a)-x-5+4x=-7x+6x+15
b)3x-2x=3x+2
c)2x-1=-3+x+4
d)2x-1=-3+x+4
e)3x-2-2x-3=0
f)10-9x+2x=2-3x
g)4x-4-5x=-6+90
h)2-3x=-2x+12-3x

agradeço sua resposta

Answer 1

a) -x-5+4x=-7x+6x+15
3x-5=-x+15
3x+x=15+5
4x=20
x=20/4
x=5

b) 3x-2x=3x+2
x=3x+2
x-3x=2
-2x=2
x=-2/2
x=-1

c) 2x-1=-3+x+4
2x-x=-3+4+1
x=2

d) 2x-1=-3+x+4
igual a letra c

e) 3x-2-2x-3=0
x-5=0
x=5

f) 10-9x+2x=2-3x
-7x=2-10-3x
-7x+3x=-8
-4x=-8
x=-8/-4
x=2

g) 4x-4-5x=-6+90
-x=84+4
x=-88

H) 2-3x=-2x+12-3x
-3x+2x+3x=12-2
2x=10
x=10/2
x=5

Answer 2

Olá bom dia! ^_^

a) - x - 5 + 4x = -7x + 6x + 15

- x + 4x + 7x - 6x = 15 + 5

3x + 7x - 6x = 20

10x - 6x = 20

4x = 20

x = 20/4

x = 5

_______________________

b) 3x - 2x = 3x + 2

3x - 2x - 3x = 2

x - 3x = 2

- 2x = 2

x = 2/-2

x = - 1

_______________________

c) 2x -1 = -3 + x + 4

2x - x = - 3 + 4 + 1

x = 1 + 1

x = 2

_____________________

d) 2x - 1 = -3 + x + 4

2x - x = - 3 + 4 + 1

x = 1 + 1

x = 2

__________________

e) 3x - 2 -2x - 3 = 0

3x - 2x = 3 + 2

x = 5

__________________

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

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

- 9x + 5x = - 8

- 4x = - 8

x = -8/-4 {- - = +}

x = 8/4

x = 2

____________________

g) 4x - 4 - 5x = - 6 + 90

4x - 5x = - 6 + 90 + 4

- x = 84 + 4

- x = 88

x = - 88

____________________

h) 2 - 3x = -2x + 12 - 3x

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

- x + 3x = 10

2x = 10

x = 10/2

x = 5

____________________

Se tiver dúvidas é só falar!

*Espero ter ajudado!

****Bons Estudos********