Question

VALENDO 50 PONTOS

1- Resolva as equações
a) 2x-5=x+6
b)5x-3=2+12
c)4 (x+1)= 2 (x+8)
d) 5 (2x-2)=4 (2x+1)

Answer 1

a)

2x-5=x+6

2x-x=6+5

1x=11

x=11/1

x=11

b)

5x-3=2+12

5x=2+12+3

5x=17

x=17/5

c)

4 (x+1)= 2 (x+8)

4x+4=2x+16

4x-2x=16-4

2x=12

x=12/2

x=6

d)

5(2x-2)=4(2x+1)

10x-10=8x+4

10-8x=4+10

2x=14

x=14/2

x=7

Answer 2

Olá!!!!

Resolução!!!

a)
2x - 5 = x + 6
2x - x = 6 + 5
x = 11

S = { 11 }

b)
5x - 3 = 2 + 12
5x = 2 + 12 + 3
5x = 14 + 3
5x = 17
x = 17/5

S = { 17/5 }

c)
4 ( x + 1 ) = 2 ( x + 8 )
4x + 4 = 2x + 16
4x - 2x = 16 - 4
2x = 12
x = 12/2
x = 6

S = { 6 }

d)
5 ( 2x - 2 ) = 4 ( 2x + 1 )
10x - 10 = 8x + 4
10x - 8x = 4 + 10
2x = 14
x = 14/2
x = 7

S = { 7 }

Espero ter ajudado!!!