Question

a raiz da equacao 2x+1/4

Answer 1

2x + 1/4 = 0
2x = - 1/4
x = - 0,25/2
x = - 0,125 = -1/ 8             ok

Answer 2

mmc (3,4,5) = 60

30x + 15-12x + 36 = 20x
18x + 51+20x
2x=51
x = 51/2
espero ter ajudado :)