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January 31, 2015

January 31, 2015

Posted by **Anonymous** on Sunday, September 5, 2010 at 4:53pm.

- maths -
**rebekah**, Sunday, September 5, 2010 at 4:58pmplug in the numbers

so

20=4r

then divide by 4

20/4

so 5=r

- maths -
**Ms. Sue**, Sunday, September 5, 2010 at 4:59pme= ir

20 = 4r

20/4 = r

5 = r

Substitute 5 for r to prove this equation.

20 = 4 * 5

20 = 20

Right.

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