Question

01. Resolva as equações: a) 4x + 2 = 30
b) 9x = 6x + 12
c) 6x + 8 = x + 23
d) 5x - 1 = 3x + 11
e) 2x - 8 = 3x - 10
f) 24x17 = 20x-5
g) 3 (x - 1) = 8x + 7 02.​

Answer 1

Explicação passo-a-passo:

a)

• 4x +2 = 30
• 4x = 30 -2
• 4x = 28
• x = 28/4
• x= 7

b)

• 9x = 6x +12
• 9x -6x = 12
• 3x = 12
• x = 12/3
• x= 4

c)

• 6x +8 = x +23
• 6x -x = 23 -8
• 5x = 15
• x = 15/5
• x = 3

d)

• 5x -1 = 3x +11
• 5x -3x = 11 -1
• 2x = 10
• x = 10/2
• x = 5

e)

• 2x -8 = 3x -10
• 2x - 3x = -10 +8
• -1x = -2
• x= (-2)/(-1)
• x= 2

f)

• 24x -17 = 20x -5
• 24x -20x = -5 +17
• 4x = 12
• x = 12/4
• x= 3