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valina [46]
3 years ago
12

The product of a number and 2 is 20 less than the product of the number and -3. What is the number?

Mathematics
1 answer:
SOVA2 [1]3 years ago
6 0
<h3><u>answer</u><u>:</u></h3>

<em>x</em><em> </em><em>=</em><em> </em><em>-4</em>

<h3><em>steps</em><em>:</em></h3>

Let the number = x (set up an equation)

2x = -3x - 20

add 3x to both sides

5x = -20

divide by 5 on both sides

<u>x</u><u> </u><u>=</u><u> </u><u>-4</u>

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If you subtract the right side expression from both sides, you will get an equation with something equal to zero. If the 'something' has a variable in it, there is exactly one solution.

A: (5x+12) -(-12x-12) = 17x+24 = 0 . . . one solution

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