A number is subtracted from 9. The result is multiplied by 10 and the answer is 40. Construct an equation from the information given then solve it.

x = 5

Step-by-step explanation:

(9 - x) × 10 = 40

90 - 10x = 40

90 - 40 = 10x

50/10 = 10x/10

x = 5

Step-by-step explanation:

A number is subtracted from 9. We can call this number "x."

9-x is our first part. Now the problem is saying that the result is multiplied by 10.

10(9-x)

Now the problem is saying that this expressions is equal to 40. Now we have constructed the equation 10(9-x) = 40. Now let's solve!

10(9-x) = 40
divide each side by 10.
9-x=4
subtract 9 from both sides
-x=-5
multiply each side by -1
x=5

The number is 5

step-by-step explanation:

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