Penyelesaian - Absolute value equations

$$\left(x-1\right)=\left(2\right)$$

Add $$$$ to both sides:

$$\left(x-1\right)+1=\left(2\right)+1$$

Permudahkan aritmetik:

$$x=\left(2\right)+1$$

Permudahkan aritmetik:

$$x=3$$

$$\left(2\right)=-x+1$$

Tukar belah:

$$-x+1=\left(2\right)$$

Subtract $$$$ from both sides:

$$\left(-x+1\right)-1=\left(2\right)-1$$

Permudahkan aritmetik:

$$-x=\left(2\right)-1$$

Permudahkan aritmetik:

$$-x=1$$

Multiply both sides by $$$$:

$$-x·-1=1·-1$$

Buang nilai satu:

$$x=1·-1$$

Buang nilai satu:

$$x=-1$$