Mathematics: The sum of 3 times a number and 12 is 20

You would use 6 bricks in each row to get 3 ft wide.Dividing 912 by 6 you get 152 rows.Each row would be 3 inches in length.152 * 3 = 456 inches long or 38 ft long would be the length of the path....

The sum of 3 times a number and 12 is 20 - id312208476613, CodyJ7777

Ответ:

Fireburntbudder

06.02.2022

Mathematics

3x + 12 = 20

$x = 2\frac{2}{3}$

Step-by-step explanation:

Let x represent the unknown number.

3 times the unknown number is 3*x. = 3x

The sum of 3x and 12 is said to be 20.

This can be represented by the following equation:

3x + 12 = 20 (sum means addition)

The equation of the statement given in the equation can be expressed as 3x + 12 = 20 .

We can equally find the value of the unknown number using the equation, thus:

3x + 12 = 20

Subtract 12 from each side of the equation

3x + 12 - 12 = 20 - 12

3x = 8

Divide both sides by 3

$\frac{3x}{3} = \frac{8}{3}$

$x = 2\frac{2}{3}$

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The sum of 3 times a number and 12 is 20

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