Resposta:

a) x = 3

b) x = -10

c) x = 4

d) x = 5

e) x = 7

f) x = 4

g) x = 6

h) x = 1

i) x = 3

j) x = [tex]\frac{6}{11}[/tex] ou x = 0,54

Verified answer

Explicação passo-a-passo:

[tex]a)x + 5 = 8 \\ x = 8 - 5 \\ x = 3[/tex]

[tex]b)x + 9 = - 1 \\ x = - 1 - 9 \\ x = - 10[/tex]

[tex]c)2x = 8\\ x = \frac{8}{2} [/tex]

[tex]x = 4[/tex]

[tex]d)3x = 15 \\ x = \frac{15}{3} [/tex]

[tex]x = 5[/tex]

[tex]e)3x - 13 = 8 \\ 3x = 8 + 13 \\ \\ 3x = 21 \\ x = \frac{21}{3} [/tex]

[tex]x = 7[/tex]

[tex]f)6x = 2x + 16 \\ 6x - 2x = 16 \\ 4x = 16 \\ x = \frac{16}{4} [/tex]

[tex]x = 4[/tex]

[tex]g)2x - 5 = x + 1 \\ 2x - x = 1 + 5 \\ x = 6[/tex]

[tex]h)2x + 3 = x + 4 \\ 2x - x = 4 - 3 \\ x = 1[/tex]

[tex]i)5x + 7 = 4x + 10 \\ 5x - 4x = 10 - 7 \\ x = 3[/tex]

[tex]j)8x + 9 + 3x = 15 \\ 11x = 15 - 9 \\ 11x = 6 \\ x = \frac{6}{11} [/tex]