Question

if 20 is subtracted from 4 time a number the result is 40​

Answer 1

Here is your answer ❤.

Let n = the unknown number.

Four (4) times the unknown number n is 4n.

Twenty-five (25) subtracted from 4n is 4n - 25.

Therefore, "When 25 is subtracted from 4 times a certain number (n), the result is 59," can be translated mathematically to give us the following equation to be solved for n:

4n - 25 = 59

Begin solving this equation by isolating n on the left side by adding 25 to both sides and then simplify as follows:

4n - 25 + 25 = 59 + 25

4n + 0 = 84

4n = 84

Now, divide both sides by 4 and then simplify as follows:

(4n)/4 = 84/4

(4/4)n = 21

(1)n = 21

n = 21

Answer 2

let number be x

4x - 20 = 40

4x = 60

x = 15

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