Tìm x
a. -2/5 + 5/6x = -4/15
b. 2/3 + 7/4 : x = 5/6
c. (x + 5/3) . ( x - 5/4)=0
d. (1/3x - 8/13) . (2.5 + -7/5 : x) =0
Giups mik vs mik cần gấp!!
b. 2/3 + 7/4 : x = 5/6
c. (x + 5/3) . ( x - 5/4)=0
d. (1/3x - 8/13) . (2.5 + -7/5 : x) =0
Giups mik vs mik cần gấp!!