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To solve this question use a two variable system of equations.

First assign a variable to each number:

a=first number

b=second number

Then use the information in the problem to write two equations

They have a product of 20 translates to:

a x b =20

They have a sum of 9 translates to:

a + b =9

Use the method of substitution.

Isolate one variable in the 1st equation:

a= 20/b

Plug it into the 2nd equation:

(20/b) + b = 9

Solve for b:

b = 5

Now put b back into the 2nd equation:

a + 5=9

Solve for a:

a = 4

So the solution is 4 and 5.

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โˆ™ 2010-03-17 04:13:32
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โˆ™ 2020-09-25 13:38:24

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Q: Two numbers have a product of 20 and a sum of 9?
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