Question

resolva as equacoes:
a)(usu-rj) x-5+ x+1=0
x-1
b)(ufmg) 2+ 1=0
x-1 x-2
c)(ufpa) 2x+1 + 2=1
x-3 x²-9
d)(fuvest-sp) x+2 + 2= -1
2 x-2 2

Answer 1

 a) x- 5+ x+1=0
x+x= -5-1
2x= -6
x= 2/6
x= 1/3