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How to Convert each fraction into an equal fraction using the lcd?
Wiki User
∙ 11y ago
Example: 1/30 and 1/42
Factor the denominators.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Combine the factors, eliminating duplicates.
2 x 3 x 5 x 7 = 210, the LCD
Convert each fraction by multiplying by what's missing.
30 x 7 = 210
42 x 5 = 210
1/30 x 7/7 = 7/210
1/42 x 5/5 = 5/210
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoExample: 1/30 and 1/42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Combine the factors, eliminating duplicates.
2 x 3 x 5 x 7 = 210, the LCD
1/30 = 7/210
1/42 = 5/210
Wiki User
∙ 11y agoExample: 1/30 and 1/42
Their LCD is 210.
Multiply each one by whatever it takes to make 210 in the denominator.
30 x 7 = 210
42 x 5 = 210
1/30 x 7/7 = 7/210
1/42 x 5/5 = 5/210
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