Solve {(21(1^2-2))/2(1^2-2)}3(1)

$$\{ \frac { ( 21 ( 1 ^ { 2 } - 2 ) ) } { 2 ( 1 ^ { 2 } - 2 ) } \} 3 ( 1 )$$

Evaluate

$$\frac{63}{2}=31.5$$

Solution Steps

Cancel out 1^{2}-2 in both numerator and denominator.

$$\frac{21}{2}\times 3\times 1$$

Express \frac{21}{2}\times 3 as a single fraction.

$$\frac{21\times 3}{2}\times 1$$

Multiply 21 and 3 to get 63.

$$\frac{63}{2}\times 1$$

Multiply \frac{63}{2} and 1 to get \frac{63}{2}.

$$\frac{63}{2}$$

Factor

$$\frac{3 ^ {2} \cdot 7}{2} = 31\frac{1}{2} = 31.5$$