4x 10
_____ = ____
x+1 3x+1
4x(3x+1)=10(x+1)
12x²+4x=10x+10
12x²+4x-10x-10=0
12x²-6x-10=0
simplificas y aspa simple
y te quedan así:
6x²-3x-5=0
6(x²-3x/6-5/6)=0
6(x²-x/2-5/6)=0
6(x²-2.1/2.x/2-(1/16)+(1/16)-5/6)=0
(x²-2.1/4.x+1/16) -1/16-5/6=0
(x-1/4)²-37/48=0
(x-1/4)²=37/48
x-1/4=(37/48)²
x=(37/48)²+1/4
x=7780/9216
SUERTE!!!
