Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 year ago

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

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• RR
Lv 7
1 year ago

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.

• Como
Lv 7
1 year ago

:-

4x - 20 = 4

4x = 24

x = 6______is the number.

• Anonymous
1 year ago

Let the number be x

4 x - 20 = 4

4 x = 24

x = 6

• 1 year ago

If the number is x

4x - 20 = 4

4x = 24

x = 6

• 1 year ago

4x-20=4

4x=4+20

4x=24

x=24/4

x=6

• 1 year ago

4x - 20 = 4

4x = 4 + 20

4x = 24

• David
Lv 7
1 year ago

If 4x -20 = 4 then x = 6

• 1 year ago

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!

• Mike G
Lv 7
1 year ago

x-5 = 1

x = 6

• geezer
Lv 7
1 year agoReport

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

• 1 year ago

Let x be the number.

4x - 20 = 4

4x = 24

x = 6

The number is 6.