Question

• Determine o valor de X nas equações:

A. 3 (x-2) = -6
B. -3 (x-2) = 9
C. -4 (-x-2) = 16
D. 4 (3x+5) = 0
E. -4 (x+2) = -9
F. -5 (4x-2) = 0
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Answer 1

A= 3x-6 = -6

3x= -6 +6

3x = 0

X= 0

B. -3(x-2)=9

-3x +6= 9

-3x = 9-6

-3x= 3

x=3/-3

X= -1

C. -4(-x-2) = 16

4x + 8 = 16

4x =16-8

4x = 8

X = 8/4

X= 2

D. 4 (3x+5) = 0

12x + 20 = 0

12x = -20

X= -20/12

X = -1,666...

E. -4 (x+2) = -9

-4x - 8 = 9

-4x = 9 + 8

-4x = 17

X = 17/ -4

X= -4.25