Question

$$|9x-3x|=4$$

Answer

x=-2/3,2/3

Solution


Simplify  \(9x-3x\)  to  \(6x\).
\[|6x|=4\]
Break down the problem into these 2 equations.
\[6x=4\]
\[-6x=4\]
Solve the 1st equation: \(6x=4\).
\[x=\frac{2}{3}\]
Solve the 2nd equation: \(-6x=4\).
\[x=-\frac{2}{3}\]
Collect all solutions.
\[x=\pm \frac{2}{3}\]

Decimal Form: ±0.666667