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Chapter 4: Q81. (page 174)

Write the verbal sentence as an equation and also solve this

鈥淓ight plus a number is equal to -3times the number鈥�

Short Answer

Expert verified

The equation is 8+x=-3x and the solution is x=-2.

Step by step solution

01

Step  1  . Apply the concept of linear equation

In this, simply use the concept of making a linear equation by understand the statement carefully and then solve it by doing various mathematical operations.

02

Step  2  . Find the equation

Here, the statement is : Eight plus a number is equal to -3 times the number.

Since,

Let the number be x.

8 plus the number -8+x. It is equal to -3 times the number, hence multiply-3x .

So, the final equation becomes:8+x=鈭�3x .

03

Step  3  . Solving the equation

The equation is8+x=鈭�3x.

Simple make the variable and constant of the separate side and do mathematical operations,

8+x=鈭�3xx+3x=鈭�84x=鈭�8x=鈭�84x=鈭�2

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