Question

a)3+x=4=
b)2x+1=x+3=
c)4x+5=2x+2=
d)7x+3=9x-5=
e)3(2x+4)=2(x-2)=
f)4(3x-2)+3=2x-5=
Gente ajuda ae :')

Answer 1

Resposta:

Explicação passo a passo:

A)

3+x=4

x = 4 - 3

x = 1

_________

b)

2x+1=x+3

2x - x = 3 - 1

x = 2

___________

c)4x+5=2x+2

4x - 2x = 2 - 5

2x = - 3

x = - 3/2

___________

d)7x+3=9x-5

3+5= 9x - 7x

8 = 2x

2x = 8

x = 8/2

x = 4

______________

e)

3(2x+4) = 2(x-2)

6x + 12 = 2x - 4

6x - 2x = - 4 - 12

4x = - 16

x = - 16/4

X = - 4

___________

f)

4.(3x-2)+3=2x-5

12x - 8 + 3 = 2x - 5

12x - 5 =2x - 5

12x - 2x = - 5 + 5

10x = 0

x = 0/10

x = 0