a, \(-\dfrac{2}{3}\)(x-\(\dfrac{1}{4}\))=\(\dfrac{1}{3}\)(2x-1)
b, \(\dfrac{1}{5}\).\(2^x\)+\(\dfrac{1}{3}\).\(2^{x+1}\)=\(\dfrac{1}{5}\)\(2^7\)+\(\dfrac{1}{3}2\)
c, x nguyên:
|x+1|+|x-2|+|x+7|=5x-10
Loga
Toán lớp 6
