Question

Helppp, pfv me ajuda A) X + 3 = 8
X = 8
B) 2x - 1 = 5
X = 5
C) X – 1 = 7
X = 3
D) 3X – 1 = 2
X = 4
E) 2X – 4 = X
X = 1
F) X – 2 = 0
X = 0
G) 2X = 5x
X = 2

Answer 1

Explicação passo-a-passo:

a)

x + 3 = 8

x = 8 - 3

x = 5

b)

2x - 1 = 5

2x = 5 + 1

2x = 6

x = 6/2

x = 3

c)

x - 1 = 7

x = 7 + 1

x = 8

d)

3x - 1 = 2

3x = 2 + 1

3x = 3

x = 3/3

x = 1

e)

2x - 4 = x

2x - x = 4

x = 4

f)

x - 2 = 0

x = 2

g)

2x = 5x

2x - 5x = 0

-3x = 0 .(-1)

3x = 0

x = 0/3

x = 0