Question

7) Resolva descobrindo o valor do termo x desconhecido

A) x-17=9
B) 2x + 14 = 5x -1
C) 4x - 5 = 6x +11
D) 2x 4 = - 7

Answer 1

Resposta:

a)x-17=9

x=9+17

x=26

b)2x+14=5x-1

2x-5x=-1-14

-3x=-15 .(-1)

3x=15

x=15/3

x=5

c)4x-5=6x+11

4x-6x=11+5

-2x=16 .(-1)

2x=-16

x=-8

d)2x.4=-7

2x=-7/4

x=-7/8

Answer 2

Resposta:

a ) ×- 17 =9

x=9+17

x=26

b) 2x+ 14 =5x-1

2x-5x = -1 -14

3x= -15

x= -15 /3

x = -5