H
hoanghxh1


a, [TEX]\frac{5+6x}{8} = \frac{15-x}{5} [/TEX]
:-SS:-SS:-SS:-SS:-SS:-SS:-SS:-SS:-SS
:-SS:-SS:-SS:-SS:-SS:-SS:-SS:-SS:-SS
:-SS:-SS:-SS:-SS:-SS:-SS:-SS:-SS:-SS
Last edited by a moderator: