Solve (21)-y/3>12

$$( 21 ) - \frac { y } { 3 } > 12$$

Solve for y

$$y<27$$

Solution Steps

Multiply both sides of the equation by 3. Since 3 is positive, the inequality direction remains the same.

$$63-y>36$$

Subtract 63 from both sides.

$$-y>36-63$$

Subtract 63 from 36 to get -27.

$$-y>-27$$

Divide both sides by -1. Since -1 is negative, the inequality direction is changed.

$$y<\frac{-27}{-1}$$

Fraction \frac{-27}{-1} can be simplified to 27 by removing the negative sign from both the numerator and the denominator.

$$y<27$$