Question

a raiz da equação x+2/2+x-2/5=6 é?

Answer 1

x+2     -2
------- ------ = 6
2+x      5

x+2     -2
-------  -----   = 6.5 (mmc de 2+x e 1)
2+x      1

x+2 -2(2+x)
----------------- = 30
    2+x

x+2 -4 -2x
--------------- = 30
    2+x

-x -2
-------- = 30
2+x

-x -2 = 30(2+x)
-x -2 = 60 + 30x
31x = 62

x= 62/31
x = 2

Bons estudos!