Question

Encontre as raízes: a) 3 . ( x + 2 ) = 15 b) 2. ( x – 1) -7 = 16 c) 7. ( x – 2 ) = 5. ( x + 3 ) d) 2. ( x – 5 ) + 4. ( x – 1 ) = 0 e) 2. ( x – 6 ) = -3. ( 5 + x ) f) 3. ( x + 10 )- 2. ( x – 5 ) = 0

Answer 1

Resposta:

Explicação passo-a-passo:

A) 3x+6=15

3x=9

x=3

B) 2x=25

x=12,5

C) 7x-14= 5x+15

7x-5x= 14+15

2x=29

x=14,5

D) 2x-10 +4x-4=0

2x+4x=14

6x=14

x=2,3

E)2x-12=-15+12

5x=3

x=0,6

F) 3x-2x=-30+10

x=-20