Question

3x - 1/7 = 1/4 - 1/21

Answer 1

29/252

Answer 2

3x-1/7=17/81

3x=17/81+1/7

3x=29/84

x=29/84:3

x=29/252

Answer 3

Đầy đủ nè :))))

\(3x-\dfrac{1}{7}=\dfrac{17}{84}\)

\(3x=\dfrac{17}{84}+\dfrac{1}{7}\)

\(3x=\dfrac{29}{84}\)

\(x=\dfrac{29}{84}:3\)

\(x=\dfrac{29}{252}\)

Answer 4

3x - 1/7 = 1/4 - 1/21
3x - 1/7 =17/84
3x         =17/84+1/7
3x         =29/84
 x          =29/84:3
 x          =29/252