Verified answer

Resposta:

a) x = 19

b) x = 12

c) x = 1

d) x = -2

e) x = -1/5

Explicação passo a passo:

a)

[tex]8(x+2)=7(x+5)\\8x+16 = 7x + 35\\8x-7x = 35-16\\x = 19[/tex]

b)

[tex]4(x-1)=2(x+10)\\4x-4=2x+20\\4x-2x=20+4\\2x=24\\x = 24/2\\x = 12[/tex]

c)

[tex]9(x-5)=4(x-10)\\9x-45 = 4x-40\\9x-4x=-40+45\\5x = 5\\x = 5/5\\x=1[/tex]

d)

[tex]3(x+4)=2(x+5)\\3x+12 = 2x+10\\3x-2x = 10-12\\x = -2[/tex]

e)

[tex]7(x+3)=2(x+10)\\7x+21 = 2x+20\\7x-2x=20-21\\5x = -1\\x = -\frac{1}{5}[/tex]