Question

determine o valor de x(incógnita)
a)6x=2x+16
b)2x-5=x+1
c)2x+3=x+4
d)x-7=-7
e)x+9=-1
f)x+28=11​

Answer 1

Resposta:

A) 6x = 2x + 16

6x - 2x = 16

4x = 16

x = 16 ÷ 4

x = 4

B) 2x - 5 = x + 1

2x - x = 1 + 5

x = 6

C) 2x + 3 = x + 4

2x - x = 4 - 3

x = 1

D) x - 7 = -7

x = -7 + 7

x = 0

E) x + 9 = -1

x = -1 + 9

x = 8

F) x + 28 = 11

x = 11 - 28

x = -17