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2015-10-02T13:52:04+08:00

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Let x = be the number.

Using linear equations:
3x - 6 + 2 = 20
Simplify by combining like terms.
(3x) + (-6 + 2) = 20
3x - 4 = 20
Add four to left and right hand side.
3x -4 +4 = 20
3x = 24
Divide both sides by 3.
3x / 3 = 24 / 3
x = 8

So therefore, the number is 8.

Check:
8(3) - 6 + 2 = 20
24 - 6 + 2 = 20
18 + 2 = 20
20 = 20

The number is 8. 





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2015-10-02T20:25:52+08:00

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
The correct answer is 8.
Because here is the equation.
N x 3 - 6 + 2=20
Here is the technique.
Reverse all the action and begin from the right.So 20-2+6/3=N
So the answer is 8.
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