Algebra Examples

$8$ ,

$88$ ,

$64$

Step 1

The LCM is the smallest positive number that all of the numbers divide into evenly.

1. List the prime factors of each number.

2. Multiply each factor the greatest number of times it occurs in either number.

Step 2

The prime factors for

$8$ are

$2 \cdot 2 \cdot 2$ .

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Step 2.1

$8$ has factors of

$2$ and

$4$ .

$2 \cdot 4$

Step 2.2

$4$ has factors of

$2$ and

$2$ .

$2 \cdot 2 \cdot 2$

Step 3

The prime factors for

$88$ are

$2 \cdot 2 \cdot 2 \cdot 11$ .

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Step 3.1

$88$ has factors of

$2$ and

$44$ .

$2 \cdot 44$

Step 3.2

$44$ has factors of

$2$ and

$22$ .

$2 \cdot 2 \cdot 22$

Step 3.3

$22$ has factors of

$2$ and

$11$ .

$2 \cdot 2 \cdot 2 \cdot 11$

Step 4

The prime factors for

$64$ are

$2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2$ .

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Step 4.1

$64$ has factors of

$2$ and

$32$ .

$2 \cdot 32$

Step 4.2

$32$ has factors of

$2$ and

$16$ .

$2 \cdot 2 \cdot 16$

Step 4.3

$16$ has factors of

$2$ and

$8$ .

$2 \cdot 2 \cdot 2 \cdot 8$

Step 4.4

$8$ has factors of

$2$ and

$4$ .

$2 \cdot 2 \cdot 2 \cdot 2 \cdot 4$

Step 4.5

$4$ has factors of

$2$ and

$2$ .

$2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2$

Step 5

The LCM of

$8, 88, 64$ is the result of multiplying all prime factors the greatest number of times they occur in either number.

$2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 11$

Step 6

Multiply

$2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 11$ .

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Step 6.1

Multiply

$2$ by

$2$ .

$4 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 11$

Step 6.2

Multiply

$4$ by

$2$ .

$8 \cdot 2 \cdot 2 \cdot 2 \cdot 11$

Step 6.3

Multiply

$8$ by

$2$ .

$16 \cdot 2 \cdot 2 \cdot 11$

Step 6.4

Multiply

$16$ by

$2$ .

$32 \cdot 2 \cdot 11$

Step 6.5

Multiply

$32$ by

$2$ .

$64 \cdot 11$

Step 6.6

Multiply

$64$ by

$11$ .

$704$