Question

8. 7 times a number decreased by 3 equal 18. Find the number.

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Answer 1

Answer:

7x-3=18

7x=21

x=3

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Answer 2

Answer:

The required number = 3

Step-by-step explanation:

Given:

• 7 times a number decreased by 3 is equal to 18.

To find:

• The number.

Solution:

First we will assume the number as x. Then we know that 7 times a number decreased by 3 is equal to 18 ,which means by multiplying 7 with x that is 7x and it is decreased by 3, i.e, 7x minus 3 ( 3 subtracted from 7x ) is equal to 18. Thus, forming an adequate equation and doing the required calculations, we can easily find the value of x, which is equal to the required number.

Let's find out...

Let the required number be x.

According to the problem,

• 7x - 3 = 18
• 7x = 18 + 3
• 7x = 21
• x = 21/7
• x = 3

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