solve each proportion

label Mathematics
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1. 3/x = 6/15

2. 8/12 = 3/x

3. x/4 = 20/8

4. 2x/3 = 10/1

Oct 17th, 2014

1.  3/x = 6/15

now take reciprocal on both sides, we get

x/3 = 15/6

Now multiply by 3 on both sides, we get

x = 3 * 15/6

x = 45/6

x = 15/2

2. 8/12 = 3/x

now take reciprocal on both sides, we get

12/8 = x/3

Now multiply by 3 on both sides, we get

x = 3 * 12/8

x = 36/8

x = 9/2

3. x/4 = 20/8

Now multiply by 4 on both sides, we get

x = 4 * 20/8

x = 80/8

x = 10

4. 2x/3 = 10/1

Multiply by 3 on both sides, we get

2x = 3 * 10/1

2x = 3 * 10

2x = 30

Now divide by 2 on both sides, we get

x = 30 / 2

x = 15

Oct 17th, 2014

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