Solve 41/2*41/2=21

$$4 \frac { 1 } { 2 } \times 4 \frac { 1 } { 2 } = 21$$

Verify

Solution Steps

Multiply both sides of the equation by 2.

$$\left(4\times 2+1\right)\times \frac{4\times 2+1}{2}=42$$

Multiply 4 and 2 to get 8.

$$\left(8+1\right)\times \frac{4\times 2+1}{2}=42$$

Add 8 and 1 to get 9.

$$9\times \frac{4\times 2+1}{2}=42$$

Multiply 4 and 2 to get 8.

$$9\times \frac{8+1}{2}=42$$

Add 8 and 1 to get 9.

$$9\times \frac{9}{2}=42$$

Express 9\times \frac{9}{2} as a single fraction.

$$\frac{9\times 9}{2}=42$$

Multiply 9 and 9 to get 81.

$$\frac{81}{2}=42$$

Convert 42 to fraction \frac{84}{2}.

$$\frac{81}{2}=\frac{84}{2}$$

Compare \frac{81}{2} and \frac{84}{2}.

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