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The expression below shows two fractions being added. 7/12 + 1/18 Which expression could be used to find the sum of the two fractions? A:5/6 + 2/6 + 1/6 + 1/6 +1/6 B:5/30 + 1/30 + 1/30 + 1/30 C:15/36 + 6/36 + 1/36 + 1/36 D:30/72 + 12/72 + 2/72 + 1/72

Sagot :

Answer:

C:15/36 + 6/36 + 1/36 + 1/36

Step-by-step explanation:

The expression below shows two fractions being added. 7/12 + 1/18

7/12 + 1/18

Lowest Common Denominator = 36

3 × 7 + 2 × 1/36 = 21 + 2/36

= 23/36

We solve the given options to find the correct answer

A:5/6 + 2/6 + 1/6 + 1/6 +1/6

= Lowest common denominator = 6

= 5 + 2 + 1 + 1 + 1/6 = 10/6 = 1 4/6 = 1 2/3

Option A is wrong

B: 5/30 + 1/30 + 1/30 + 1/30

Lowest common denominator = 30

5 + 1 + 1 + 1/30 = 8/30 = 4/15

Option B is wrong

C:15/36 + 6/36 + 1/36 + 1/36

Lowest common denominator = 36

15 + 6 + 1 + 1/36 = 23/36

Option C is correct

D:30/72 + 12/72 + 2/72 + 1/72

Lowest Common Denominator = 72

30 + 12 + 2 + 1/72

= 45/72

= 5/8

Option D is wrong.

Therefore, the correct answer is Option C

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