Question

Eu sei que sao bastante perguntas mas se cada um me ajudar com uma eu agradeço e muuuuitoo, poooor favoor!!!!a)6/x+2=3/x-8
c)12/x+3=8/x-3
d)3/4+1/x=11/12
e)4/x-5=2/2x-3
f)x+3/x=x+9/x+4
g)6/x+2=3/x-9/x
4)
b)1-x=4
c)18=2-5x
d)2x-5=5x+4
f)-4=3+10x
g)1-3x+8-5x=9-12x+5
h)10x-17+3x=7x+5-5x
5)a)2x/5-x/4=6
b)2x-1/10-x-1/4=1
c)4x-1=x/3-1/2
d)16[1+2x]/10-3[3x-1]/4=11x+25/10

Answer 1

c) 12/x+3 = 8/x-3 (multiplica cruzado)
12x - 36 = 8x + 24
12x - 8x = 24 + 36
4x = 60 
x = 60/4
x = 15

d) 2x - 5 = 5x + 4
5x + 4 = 2x - 5
5x - 2x = -5 - 4
3x = - 9
x = -9/3
x = -3