Môn Toán Lớp 7: tìm x
a) l x + 1/4 l – 3/4 = 5%
b) 2 – l 3/2x – 1/4 l = l -5/4 l
c)21/ 5 + 3 : l x/4 – 2/3 = 6
d) l x-1 l / 6 = 1/3
Môn Toán Lớp 7: tìm x a) l x + 1/4 l – 3/4 = 5% b) 2 – l 3/2x – 1/4 l = l -5/4 l c)21/ 5 + 3 : l x/4 – 2/3 = 6 d) l x-1 l / 6 = 1/3