Anonymous
Anonymous asked in Science & MathematicsMathematics · 7 months ago

# Twenty less than four times a certain number is 4. Determine the number.?

Relevance

Twenty less

-20

than four times a certain number

4x

is

= 4.

4x - 20 = 4

4x = 24

x = 6

Alternatively, work it backwards:

Starting with 4, working backwards twenty less = twenty more

20 + 4 = 24

If four times a number = 24, the answer must be 6.

• :-

4x - 20 = 4

4x = 24

x = 6______is the number.

• Anonymous
7 months ago

Let the number be x

4 x - 20 = 4

4 x = 24

x = 6

• If the number is x

4x - 20 = 4

4x = 24

x = 6

• 4x-20=4

4x=4+20

4x=24

x=24/4

x=6

• 4x - 20 = 4

4x = 4 + 20

4x = 24

• If 4x -20 = 4 then x = 6

• You can just trial and error, I first tried 4 which would get -4, then I tried 5 which would get you 0, then I got six as 4!

• x-5 = 1

x = 6

• geezer
Lv 7
7 months agoReport

But you need to explain how you started at x-5 = 1

• Let x be the number.

4x - 20 = 4

4x = 24

x = 6

The number is 6.